Find the Exact Value sin(pi)-cos(pi)

$\sin (π) - \cos (π)$

Step 1

Simplify each term.

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

$\sin (0) - \cos (π)$

The exact value of $\sin (0)$ is $0$ .

$0 - \cos (π)$

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the second quadrant.

$0 - - \cos (0)$

The exact value of $\cos (0)$ is $1$ .

$0 - (- 1 \cdot 1)$

Multiply $- (- 1 \cdot 1)$ .

Multiply $- 1$ by $1$ .

$0 - - 1$

Multiply $- 1$ by $- 1$ .

$0 + 1$

Step 2

Add $0$ and $1$ .

$1$

Find the Exact Value sin(pi)-cos(pi)

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