Find the exact circular function value.
-$\cos 2 \pi$
A) $- 1$
B) $\frac { 1 } { 2 }$
C) 1
D) 0

Name: Find the exact circular function value. -$\cos 2 \pi$ A) $- 1$ B) $\frac { 1 } { 2 }$ C) 1 D) 0
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Quizplus · Accepted Answer

The cosine of $2\pi$ radians (which is equivalent to 360 degrees, a full circle) is 1. This is because $\cos 2\pi$ points to the same position on the unit circle as $\cos 0$, which is at (1, 0), thus having a cosine value of 1.

Find the Exact Circular Function Value cos⁡2π\cos 2 \picos2π A) −1- 1−1

Find the Exact Circular Function Value $\cos 2 \pi$ A) $- 1$