Question

what is adjacent to a? options: b, c, a (with a right triangle diagram labeled with vertices a, b, c and sides a, b, c)

Explanation:

Step1: Recall adjacent side definition

In a right - triangle, for an angle \(A\), the adjacent side is the non - hypotenuse side that forms the angle \(A\).

Step2: Identify sides

In the right - triangle shown, side \(c\) is the hypotenuse. Side \(a\) is opposite to angle \(A\). Side \(b\) forms angle \(A\) along with the hypotenuse \(c\) and is non - hypotenuse. So side \(b\) is adjacent to angle \(A\).

Answer:

A. b