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29. If one angle of a triangle is 60° and the other two angles are in the ratio 1: 2. find theangles.​

Answer»

Step-by-step explanation:

The sum of the three angles of TRIANGLE is 180°.

First angle = 60° .

Let second angle be 1X and third angle be 2x.

60 + 1x + 2x = 180°.

60 + 3x = 180°

3x = 180-60 = 120.

x = 120/3 .

x = 40°.

Measure of second angle is 40° and third angle

is of 80°.

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