Solve the Problem $\theta$ Angles $P Q R$ And VRQ Are Right Angles

Multiple Choice

Solve the problem.
-Let angle POQ be designated $\theta$ . Angles $P Q R$ and VRQ are right angles. If $\theta = 45 ^ { \circ }$ , find the exact length of $O V$ .

A) $\sqrt { 2 }$
B) $\frac { \sqrt { 2 } } { 2 }$
C) 1
D) 0