Question

If the complement of an angle is 79°, then the angle will be of 

(a) 1° (b) 11° (c) 79° (d) 101°

Answer 1

(b) 11^o

When the sum of the measures of two angles is 90°, the angles are called complementary angles. Each of them is called complement of the other.

The given complement of an angle is 79^o

Let the measure of its angle be x^o.

Then,

x + 79^o = 90^o

x = 90^o – 79^o

x = 11^o

Hence, the measure of its angle is 11^o.