Find the values of ? in degrees $\left( 0 ^ { \circ } \leq \theta \leq 90 ^ { \circ } \right)$ and radians $\left( 0

Question

Find the values of ? in degrees $\left( 0 ^ { \circ } \leq \theta \leq 90 ^ { \circ } \right)$ and radians $\left( 0 < \theta < \frac { \pi } { 2 } \right)$ without the aid of a calculator. cos ? = 0 and tan ? = Not defined
?
?
A)90° = $\frac { \pi } { 2 }$
B)?60° = $\frac { \pi } { 3 }$
C)?0° = 0
D)?30° = $\frac { \pi } { 6 }$
E)?45° = $\frac { \pi } { 4 }$

Quizplus · Accepted Answer

The cosine of an angle is 0 at $90^\circ$ or $\frac{\pi}{2}$ radians, and the tangent is not defined at the same angles because it involves division by zero in the sine over cosine ratio.

Find the Values of ? in Degrees (0∘≤θ≤90∘)\left( 0 ^ { \circ } \leq \theta \leq 90 ^ { \circ } \right)(0∘≤θ≤90∘)

Find the Values of ? in Degrees $\left( 0 ^ { \circ } \leq \theta \leq 90 ^ { \circ } \right)$