Free Version
Easy

# Complementary Angles: Radian Measure, Right Angle

TRIG-QNNC6B

Given the above figure, what value, in radian measure, for $\theta$ would prove that angle CAB is a right triangle?

A

$\theta =\cfrac { 5 \pi }{ 12 }$

B

$\theta =\cfrac { 11 \pi }{ 12 }$

C

$\theta =\cfrac { 7 \pi }{ 12 }$

D

$\theta =\cfrac { 13 \pi }{ 12 }$