In the Figure $\alpha$ And $\beta$ Are Positive Angles $\alpha$ As a Function Of

Multiple Choice

In the figure, $\alpha$ and $\beta$ are positive angles.
A = 9, b = 18
Write $\alpha$ as a function of $\beta$ .

A) $\alpha$ = arcsin(9sin $\beta$ )
B) $\alpha$ = sin( $\frac { 1 } { 2 }$ sin $\beta$ )
C) $\beta$ = arcsin( $\frac { 1 } { 2 }$ sin $\alpha$ )
D) $\beta$ = sin( $\frac { 1 } { 2 }$ sin $\alpha$ )
E) $\alpha$ = arcsin( $\frac { 1 } { 2 }$ sin $\beta$ )