Geometry
# Fundamental Trigonometric Identities

Which of the following is equal to

$\cot ( 90 ^ \circ - \theta) ?$

Which of the following is the same as $\sin (-769^{\circ})?$

$a=(0, 7)$ and $b=(-12, 0).$ What is the value of $\cos(-\theta)+\sin(180^{\circ} - \theta)?$

In the above graph,Which of the following is equal to

$\cos \left( \frac{\pi}{2} -2 \theta \right)?$