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06-09-2019
Mathematics

contestada

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) 54
D) 72

Respuesta :

06-09-2019

Answer:

B = 36

Step-by-step explanation:

C = 2B -18 is the direct translation of the statement given in the question.

Since the sum of all angles of a triangle is 180.

A+B+C = 180

90 + B + (2B-18) = 180

solve for B

B = 36

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