Question

What is the measure of complementary angle of 20°?Select the correct alternative from the given alternatives.
(1) 60°
(2) 70°
(3) 80°

Answer 1

the measure is 70°. .

because the sum of complementary Angles is = 90°
given one Angle = 20°
then other angle will be 90- 20 = 70°
hope it helps !
thank you !

Answer 2

Solution :

Option ( 2 ) is correct.

Explanation :

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Two angles are said to be a

complementary if their sum is 90°

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Here ,

one angle ( x ) = 20°

Let the second angle = y

x + y = 90°

=> y = 90° - x

=> y = 90° - 20°

=> y = 70°

Therefore ,

Second angle = y = 70°

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