Question

ZA and ZB are complementary angles. If m A = (2x – 13) and m

ZB = (4x - 5), then find the measure of ZB,

Answer 1

43º

Explanation:

complementary angles total 90

(2x - 13) + (4x - 5) = 90

Combine like terms

6x - 18 = 90

6x = 72

x = 12

ZB = 4x - 5

ZB = 4(12) - 5

ZB = 43º