1.

Two supplementary angles are in the ratio 4 : 5. Find the angles.

Answer»

Supplementary angles are in the ratio 4 : 5

Let the angles be 4x and 5x.

It is given that they are supplementary angles

Therefore,

4x + 5x = 180°

x = 20°

Hence, 4x = 80°

5x = 100°

Therefore, angles are 80° and 100°.



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