Question

Solve for A, find the exact value of each expression below.

Answer 1

`\begin{gathered} \theta=(7\pi)/(6) \\ 2\sin ((7\pi)/(6))=2((-1)/(2))=-1 \\ 2\sin ((7\pi)/(6))=-1 \\ \\ \sin ^2((7\pi)/(6))=((-1)/(2))^2=(1)/(4) \\ \sin ^2((7\pi)/(6))=(1)/(4) \\ \\ \sin (-(7\pi)/(6))=-\sin ((7\pi)/(6))=-((-1)/(2))=(1)/(2) \\ \sin (-(7\pi)/(6))=(1)/(2) \end{gathered}`