Question

an angle is 18 degree more than its complementry find the angle?

Answer 1

Let one of the angles be x°. then other will be (x+18)°

x+x+18=90
2x+18=90
2x=90-18
2x=72
x=72/2
x=36.

Hence, the angles are 36° and (36+18)°=54°

Answer 2

Let the angle be x.

Then the other angle is x + 18

Now if the two angles are complimentary , their sum is 90 degree

=> x + [x + 18 ]= 90

=> 2x = 72

=> x = 36 degree

Hence the angles are 36 degree and 54 degree ans

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