Question

The complement of an angle is 7/2 of itself. Find the angle.

Answer 1

Answer:

Required angle (x) = 20°

Explanation:

Let the angle = x

It's complement = (90-x)

According to the problem given,

(90-x) = 7x/2

=> 2(90-x) = 7x

=> 180 - 2x = 7x

=> 180 = 7x+2x

=> 180 = 9x

=> x = 180/9

=> x = 20

Therefore,

The angle =x = 20°

It's complement = (90-x)

= 90-20

= 70°

••••

Answer 2

Answer:20°

Step-by-step explanation:

Let 1 angle =x

Another angle =7x/2

i.e.,

X+7x/2=90

9x/2=90

9x=90*2

9x=180

X=180/9

x=20