In Exercises 1–6, use the figures to find the exact value of each trigonometric function.
sin 2θ

Given $\tan\theta=\frac{5}{12}$ and 0 < $\theta$ < $\frac{\pi}{2}$, find $\cos\left(2\theta\right)$.

Find values of the sine and cosine functions for each angle measure.

2x, given tan x = 5/3  and sin x < 0