Solving Trigonometric Equations · Review Exercise 131

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, Algebra and Trigonometry 2e · §9.5 Solving Trigonometric Equations · Review Exercise 131