Question

If one angle is 1/5 of its supplementary angle, then find out the angles ?

Answer 1

Answer.

Let, the first angle be x
then, the second angle be x/5

It is given that these angles are supplementary.
So,
x + x/5 = 180.
(5x + x) ÷ 5 = 180
6x = 180×5
x = 900/6
x = 150.

Hence the first angle is 150°.
and the second angle is 30°.

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