Question

find the angle whose supplement is 20° more than thrice its complement​

Answer 1

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Let the angle be x.

So, its supplement angle is 180° - x.

and its complement angle is 90° - x.

According to statement

180° - x = 20 + 3(90° - x)

180° - x = 20 + 270° - 3x

2x = 110°

x = 55°.

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Answer 2

Answer:55

Step-by-step explanation:

Let the angle be x.

So, its supplement angle is 180° - x.

and its complement angle is 90° - x.

According to statement

180° - x = 20 + 3(90° - x)

180° - x = 20 + 270° - 3x

2x = 110°

x = 55°.