Question

What is the value of r, in inches?
7 in.
B
1403
30°
D
21
X

Answer 1

9514 1404 393

Answer:

A. 7√3

Explanation:

The side length ratios in a 30°-60°-90° triangle are 1 : √3 : 2. Here, the shortest side is 7, and x is the next-longer side.

x = 7√3