. In right triangle ABC, ?A = 90° and ?C is 18° less than twice the measure of ?B. What is the measure of ?B? A) 18° B) 36° C) 5

Question

3 years ago

9

4° D) 72°

2 answers:

inn [45] · Answer 1 · 2022-04-09T05:55:53+03:00

inn [45]3 years ago

6 0

Answer: 72°

Step-by-step explanation:

ad-work [718] · Answer 2 · 2022-04-09T07:02:18+03:00

Answer:

B

Step-by-step explanation:

the sum of the 3 angles in a triangle = 180°

let the measure of B be x, then C = 2x - 18

the sum of the 3 angles is therefore

x + 2x - 18 + 90 = 180

3x + 72 = 180 ( subtract 72 from both sides )

3x = 108 ( divide both sides by 3 )

x = 36

Hence ∠B = 36°