Question

The measure of angles of a triangle are in ratio 8 : 7 : 5 , find the measure of greatest angle.
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Answer 1

Answer:

greatest angle is 72

Explanation:

Let the angles be 8x, 7x and 5x, then

8x+7x+5x= 180 [Sum of angles in a triangle=180]

=20x= 180

=x= 180÷18

=x= 9

Therefore the angles of the triangle are: 8x= 8×9= 72

7x=7×9=63

5x=5×9=45

the greatest angle is 72