How do you find the numeric value of angle A, B, and C for triangle ABC given A=x and B=C=4x?

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Answer 1 · 2016-12-17T19:49:56

Use the fact: #angle A + angle B + angle C = 180^@#

#angle A + angle B + angle C = 180^@#

#x + 4x + 4x = 180^@#

#9x = 180^@#

#x = 20^@#

#4x = 80^@#

#angle A = 20^@#

#angle B = 80^@#

#angle C = 80^@#