one angle of a triangle is equal to the sum of the other two. If the ratio of the other two angels is 7:8, find the angels of the triangle.
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Let the other two angles be 7x and 8x.
Then 1st angle is 7x + 8x = 15x
We know, 15x + 7x + 8x = 180
30x = 180. x = 6
Therefore angles are 7×6, 8×6, 15×6
42°, 48° & 90°
Then 1st angle is 7x + 8x = 15x
We know, 15x + 7x + 8x = 180
30x = 180. x = 6
Therefore angles are 7×6, 8×6, 15×6
42°, 48° & 90°
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