1. Two adjacent angles on a straight line are (5x-40°) and (3x+20°), they are a) 85,95° b) 75⁰,105° c) 60°,120° d)

January 2024 1 0 Report

1. Two adjacent angles on a straight line are (5x-40°) and (3x+20°), they are a) 85,95° b) 75⁰,105° c) 60°,120° d) 55°,125⁰

Answer: 85,95°

Explanation:

Sum of two adjacent angles on a straight line is 180

So,

= (5x-40) + (3x+20) = 180

= 8x - 20 = 180

= 8x = 200

= x = 25

Thus, (5x-40) = 85 and (3x+20) = 95