Simplify sec(pi/2-x)^2(sin(x)^2-sin(x)^4)

$\sec^{2} (\frac{π}{2} - x) (\sin^{2} (x) - \sin^{4} (x))$

Rewrite $\sec (\frac{π}{2} - x)$ in terms of sines and cosines.

${(\frac{1}{\cos (\frac{π}{2} - x)})}^{2} (\sin^{2} (x) - \sin^{4} (x))$

Simplify the expression.

Apply the product rule to $\frac{1}{\cos (\frac{π}{2} - x)}$ .

$\frac{1^{2}}{\cos^{2} (\frac{π}{2} - x)} (\sin^{2} (x) - \sin^{4} (x))$

One to any power is one.

$\frac{1}{\cos^{2} (\frac{π}{2} - x)} (\sin^{2} (x) - \sin^{4} (x))$

Apply the distributive property.

$\frac{1}{\cos^{2} (\frac{π}{2} - x)} \sin^{2} (x) + \frac{1}{\cos^{2} (\frac{π}{2} - x)} (- \sin^{4} (x))$

Combine $\frac{1}{\cos^{2} (\frac{π}{2} - x)}$ and $\sin^{2} (x)$ .

$\frac{\sin^{2} (x)}{\cos^{2} (\frac{π}{2} - x)} + \frac{1}{\cos^{2} (\frac{π}{2} - x)} (- \sin^{4} (x))$

Rewrite using the commutative property of multiplication.

$\frac{\sin^{2} (x)}{\cos^{2} (\frac{π}{2} - x)} - \frac{1}{\cos^{2} (\frac{π}{2} - x)} \sin^{4} (x)$

Combine $\sin^{4} (x)$ and $\frac{1}{\cos^{2} (\frac{π}{2} - x)}$ .

$\frac{\sin^{2} (x)}{\cos^{2} (\frac{π}{2} - x)} - \frac{\sin^{4} (x)}{\cos^{2} (\frac{π}{2} - x)}$

Rewrite $\frac{\sin^{2} (x)}{\cos^{2} (\frac{π}{2} - x)}$ as ${(\frac{\sin (x)}{\cos (\frac{π}{2} - x)})}^{2}$ .

${(\frac{\sin (x)}{\cos (\frac{π}{2} - x)})}^{2} - \frac{\sin^{4} (x)}{\cos^{2} (\frac{π}{2} - x)}$

Rewrite $\frac{\sin^{4} (x)}{\cos^{2} (\frac{π}{2} - x)}$ as ${(\frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})}^{2}$ .

${(\frac{\sin (x)}{\cos (\frac{π}{2} - x)})}^{2} - {(\frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})}^{2}$

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = \frac{\sin (x)}{\cos (\frac{π}{2} - x)}$ and $b = \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)}$ .

$(\frac{\sin (x)}{\cos (\frac{π}{2} - x)} + \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)}) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Simplify terms.

Simplify each term.

Rewrite $\frac{\sin (x)}{\cos (\frac{π}{2} - x)}$ as a product.

$(\sin (x) \frac{1}{\cos (\frac{π}{2} - x)} + \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)}) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Write $\sin (x)$ as a fraction with denominator $1$ .

$(\frac{\sin (x)}{1} \cdot \frac{1}{\cos (\frac{π}{2} - x)} + \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)}) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Simplify.

Divide $\sin (x)$ by $1$ .

$(\sin (x) \frac{1}{\cos (\frac{π}{2} - x)} + \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)}) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Convert from $\frac{1}{\cos (\frac{π}{2} - x)}$ to $\sec (\frac{π}{2} - x)$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)}) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Factor $\sin (x)$ out of $\sin^{2} (x)$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \frac{\sin (x) \sin (x)}{\cos (\frac{π}{2} - x)}) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Separate fractions.

$(\sin (x) \sec (\frac{π}{2} - x) + \frac{\sin (x)}{1} \cdot \frac{\sin (x)}{\cos (\frac{π}{2} - x)}) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Rewrite $\frac{\sin (x)}{\cos (\frac{π}{2} - x)}$ as a product.

$(\sin (x) \sec (\frac{π}{2} - x) + \frac{\sin (x)}{1} (\sin (x) \frac{1}{\cos (\frac{π}{2} - x)})) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Write $\sin (x)$ as a fraction with denominator $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \frac{\sin (x)}{1} (\frac{\sin (x)}{1} \cdot \frac{1}{\cos (\frac{π}{2} - x)})) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Simplify.

Divide $\sin (x)$ by $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \frac{\sin (x)}{1} (\sin (x) \frac{1}{\cos (\frac{π}{2} - x)})) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Convert from $\frac{1}{\cos (\frac{π}{2} - x)}$ to $\sec (\frac{π}{2} - x)$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \frac{\sin (x)}{1} (\sin (x) \sec (\frac{π}{2} - x))) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Divide $\sin (x)$ by $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin (x) (\sin (x) \sec (\frac{π}{2} - x))) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Multiply $\sin (x) (\sin (x) \sec (\frac{π}{2} - x))$ .

Raise $\sin (x)$ to the power of $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{1} (x) \sin (x) \sec (\frac{π}{2} - x)) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Raise $\sin (x)$ to the power of $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{1} (x) \sin^{1} (x) \sec (\frac{π}{2} - x)) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$(\sin (x) \sec (\frac{π}{2} - x) + {\sin (x)}^{1 + 1} \sec (\frac{π}{2} - x)) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Add $1$ and $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\frac{\sin (x)}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Simplify each term.

Rewrite $\frac{\sin (x)}{\cos (\frac{π}{2} - x)}$ as a product.

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \frac{1}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Write $\sin (x)$ as a fraction with denominator $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\frac{\sin (x)}{1} \cdot \frac{1}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Simplify.

Divide $\sin (x)$ by $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \frac{1}{\cos (\frac{π}{2} - x)} - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Convert from $\frac{1}{\cos (\frac{π}{2} - x)}$ to $\sec (\frac{π}{2} - x)$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - \frac{\sin^{2} (x)}{\cos (\frac{π}{2} - x)})$

Factor $\sin (x)$ out of $\sin^{2} (x)$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - \frac{\sin (x) \sin (x)}{\cos (\frac{π}{2} - x)})$

Separate fractions.

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\frac{\sin (x)}{1} \cdot \frac{\sin (x)}{\cos (\frac{π}{2} - x)}))$

Rewrite $\frac{\sin (x)}{\cos (\frac{π}{2} - x)}$ as a product.

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\frac{\sin (x)}{1} (\sin (x) \frac{1}{\cos (\frac{π}{2} - x)})))$

Write $\sin (x)$ as a fraction with denominator $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\frac{\sin (x)}{1} (\frac{\sin (x)}{1} \cdot \frac{1}{\cos (\frac{π}{2} - x)})))$

Simplify.

Divide $\sin (x)$ by $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\frac{\sin (x)}{1} (\sin (x) \frac{1}{\cos (\frac{π}{2} - x)})))$

Convert from $\frac{1}{\cos (\frac{π}{2} - x)}$ to $\sec (\frac{π}{2} - x)$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\frac{\sin (x)}{1} (\sin (x) \sec (\frac{π}{2} - x))))$

Divide $\sin (x)$ by $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\sin (x) (\sin (x) \sec (\frac{π}{2} - x))))$

Multiply $\sin (x) (\sin (x) \sec (\frac{π}{2} - x))$ .

Raise $\sin (x)$ to the power of $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\sin^{1} (x) \sin (x) \sec (\frac{π}{2} - x)))$

Raise $\sin (x)$ to the power of $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\sin^{1} (x) \sin^{1} (x) \sec (\frac{π}{2} - x)))$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - ({\sin (x)}^{1 + 1} \sec (\frac{π}{2} - x)))$

Add $1$ and $1$ .

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - (\sin^{2} (x) \sec (\frac{π}{2} - x)))$

$(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - \sin^{2} (x) \sec (\frac{π}{2} - x))$

Expand $(\sin (x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x)) (\sin (x) \sec (\frac{π}{2} - x) - \sin^{2} (x) \sec (\frac{π}{2} - x))$ using the FOIL Method.

Apply the distributive property.

$\sin (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x) - \sin^{2} (x) \sec (\frac{π}{2} - x)) + \sin^{2} (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x) - \sin^{2} (x) \sec (\frac{π}{2} - x))$

Apply the distributive property.

$\sin (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x)) + \sin (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x)) + \sin^{2} (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x) - \sin^{2} (x) \sec (\frac{π}{2} - x))$

Apply the distributive property.

Simplify terms.

Combine the opposite terms in $\sin (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x)) + \sin (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x)) + \sin^{2} (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x)) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$ .

Reorder the factors in the terms $\sin (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$ and $\sin^{2} (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x))$ .

$\sin (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x)) - \sin^{2} (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x) \sin (x) + \sin^{2} (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x) \sin (x) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Add $- \sin^{2} (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x) \sin (x)$ and $\sin^{2} (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x) \sin (x)$ .

$\sin (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x)) + 0 + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Add $\sin (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x))$ and $0$ .

$\sin (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x)) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Simplify each term.

Multiply $\sin (x) \sec (\frac{π}{2} - x) (\sin (x) \sec (\frac{π}{2} - x))$ .

Raise $\sin (x)$ to the power of $1$ .

$\sin^{1} (x) \sin (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Raise $\sin (x)$ to the power of $1$ .

$\sin^{1} (x) \sin^{1} (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

${\sin (x)}^{1 + 1} \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Add $1$ and $1$ .

$\sin^{2} (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Raise $\sec (\frac{π}{2} - x)$ to the power of $1$ .

$\sin^{2} (x) (\sec^{1} (\frac{π}{2} - x) \sec (\frac{π}{2} - x)) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Raise $\sec (\frac{π}{2} - x)$ to the power of $1$ .

$\sin^{2} (x) (\sec^{1} (\frac{π}{2} - x) \sec^{1} (\frac{π}{2} - x)) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\sin^{2} (x) {\sec (\frac{π}{2} - x)}^{1 + 1} + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Add $1$ and $1$ .

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) + \sin^{2} (x) \sec (\frac{π}{2} - x) (- \sin^{2} (x) \sec (\frac{π}{2} - x))$

Rewrite using the commutative property of multiplication.

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) - \sin^{2} (x) \sec (\frac{π}{2} - x) \sin^{2} (x) \sec (\frac{π}{2} - x)$

Multiply $\sin^{2} (x)$ by $\sin^{2} (x)$ by adding the exponents.

Move $\sin^{2} (x)$ .

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) - (\sin^{2} (x) \sin^{2} (x)) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x)$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) - {\sin (x)}^{2 + 2} \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x)$

Add $2$ and $2$ .

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) - \sin^{4} (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x)$

Multiply $- \sin^{4} (x) \sec (\frac{π}{2} - x) \sec (\frac{π}{2} - x)$ .

Raise $\sec (\frac{π}{2} - x)$ to the power of $1$ .

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) - \sin^{4} (x) (\sec^{1} (\frac{π}{2} - x) \sec (\frac{π}{2} - x))$

Raise $\sec (\frac{π}{2} - x)$ to the power of $1$ .

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) - \sin^{4} (x) (\sec^{1} (\frac{π}{2} - x) \sec^{1} (\frac{π}{2} - x))$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) - \sin^{4} (x) {\sec (\frac{π}{2} - x)}^{1 + 1}$

Add $1$ and $1$ .

$\sin^{2} (x) \sec^{2} (\frac{π}{2} - x) - \sin^{4} (x) \sec^{2} (\frac{π}{2} - x)$

Simplify sec(pi/2-x)^2(sin(x)^2-sin(x)^4)

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