Question

Set up a system of equations and then use your calculator to solve: In triangle ABC, the sum of angles and c is equal to three times angle B. Angle C is 10 degrees more than twice angle B. Find the measure of each angle.(Hint: The angles of a triangle add up to 180 degrees.)

Answer 1

Explanation:

angle A = 40

angle B = 60

angle C = we don't know.

A + B + C = 180

C = 180 - A - B

C = 180 - 40 - 60

C = 80

40 + 60 + 80 = 180

180 = 180...It checks!