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One angle of a triangle is equal to the sum of other two.If the ratio of other two angles are 7:8.Find the angles of the triangles.
First angle = 7x
Second angle = 8x
Sum of first and second angle = third angle ( given in question)
7x + 8x = 15x
Sum of three angles of a triangle = 7x + 8x 15x - 180
=30x = 18.
x = 6
First angle = 7 * 6 = 42
Second angle = 8 * 6 = 48
Third angle = 15 * 6 = 90

(42 + 48 + 90 = 180)


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