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If ∠A and ∠B are complementary, find the value of x given that ∠A=3x-2 and ∠B=x+12

User Arnaud
by
8.1k points

1 Answer

1 vote

Answer:

x=20 degrees

Explanation:

complementary means the angles equal 90 degrees

so ∠A+∠B=90 degrees

∠A=3x-2 and ∠B=x+12

so subsitute

(3x-2)+(x+12)=90

then solve for x

4x+10=90

4x=80

x=20 degrees is your answer

User Jekcom
by
7.2k points
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