Find the Exact Value cos(2)(5pi)/6

$\cos (2) \frac{5 π}{6}$

Step 1

Combine $\cos (2)$ and $\frac{5 π}{6}$ .

$\frac{\cos (2) (5 π)}{6}$

Step 2

Simplify the expression.

Move $5$ to the left of $\cos (2)$ .

$\frac{5 \cdot \cos (2) π}{6}$

Reorder factors in $\frac{5 \cos (2) π}{6}$ .

$\frac{5 π \cos (2)}{6}$

$\frac{5 π \cos (2)}{6}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\frac{5 π \cos (2)}{6}$

Decimal Form:

$- 1.08946987 \dots$

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