Question

One angle of a triangle is equal to the sum of other two if ratio between the other two angle is 7:8
find the angle

Answer 1

let largest angle is (7x+8x) and small one's are 7x and 8x [where X is a common multiple ]
(7x+8x)+7x+8x= 180°
30x= 180°
x= 6°
hence small ones are 42° and , 48° so large one is 90° .