Question

QR is a radius of circle R and PQ is tangent to circle R. Find the value of x.

Answer 1

x = √(85²-84²)

x = √(7225-7056)

x = √169

x = 13

Answer 2

x = 13

Explanation:

using the Pythagorean theorem

x² = 85² - 84²

x² = 7225 - 7056 = 169

x = 13