Question

1. given the triangle below find the measure of cb

Explanation:

Step1: Use the Law of Cosines

The Law of Cosines formula is \(BC^{2}=AB^{2}+AC^{2}-2(AB)(AC)\cos\angle A\). Given \(AB = 20\), \(AC = 20\), and \(\angle A=115^{\circ}\).

Step2: Substitute values into the formula

$$
LATEXBLOCK0
$$

Answer:

\(BC\approx33.74\)