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

Multiple Choice

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. ?sin ? = 1 and csc ? = 1
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A) 90° = $\frac { \pi } { 2 }$
B) ?30° = $\frac { \pi } { 6 }$
C) ?0° = 0
D) ?60° = $\frac { \pi } { 3 }$
E) ?45° = $\frac { \pi } { 4 }$