Modeling with Trigonometric Functions · Review Exercise 78

Use the figure to find the desired quantities.

$sin\left(\frac{\beta }{2}\right),cos\left(\frac{\beta }{2}\right),tan\left(\frac{\beta }{2}\right),sin\left(\frac{\alpha }{2}\right),cos\left(\frac{\alpha }{2}\right),\text{and}tan\left(\frac{\alpha }{2}\right)$

OpenStax, Precalculus 2e · §7.6 Modeling with Trigonometric Functions · Review Exercise 78