Find all values of , if is in the interval [0, 360°) and has the given function value.
-$$\cos \theta = \frac { \sqrt { 3 } } { 2 }$$
A) $30 ^ { \circ }$ and $330 ^ { \circ }$
B) $45 ^ { \circ }$ and $225 ^ { \circ }$
C) $225 ^ { \circ }$ and $315 ^ { \circ }$
D) $135 ^ { \circ }$ and $225 ^ { \circ }$

Question

Quizplus · Accepted Answer

The cosine function equals $\frac{\sqrt{3}}{2}$ at $30^\circ$ and $330^\circ$ within the interval [0, 360°), corresponding to the first and fourth quadrants where cosine is positive.

Find All Values of , If Is in the Interval cos⁡θ=32\cos \theta = \frac { \sqrt { 3 } } { 2 }cosθ=23​​

Find All Values of , If Is in the Interval $\cos \theta = \frac { \sqrt { 3 } } { 2 }$