Question

1. in the right triangle pictured below, a, b, and c are the lengeths of its sides. what is the value of cos a? c b a a c b

Explanation:

Step1: Recall the cosine formula in a right - triangle

In a right - triangle, \(\cos\theta=\frac{\text{adjacent side}}{\text{hypotenuse}}\)

Step2: Identify the sides relative to angle \(A\)

For angle \(A\), the adjacent side is \(b\) and the hypotenuse is \(c\)

Answer:

\(\frac{b}{c}\)