Question

If mA =81 and mB = _______
then they are complementary angles.


A. 99
B. 19
C. 81
D. 9​

Answer 1

Complementary Angle Means Sum=90
So Angle MA Is 81
So Angle MB Is 90-81=9
So The Sum Total Is 9.

So Option D Is The Correct Answer.

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Answer 2

Answer:

option D 9

Step-by-step explanation:

complementary means sum of two angle is 90°

mA+mB=90

81+mB=90

mB=90°-81°

mB=9°