If the angles (3x – 20)° and (2x – 40)° are complementary angles – InterviewSolution

1.

If the angles (3x – 20)° and (2x – 40)° are complementary angles. Find x.

Answer»

As we know that sum of the measure of an angle and its complement is equal to 90°

(3x – 20)° + (2x – 40)° = 90°

⇒ 5x – 60° = 90°

⇒ 5x = 150°

⇒ x = 30°

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