Question

the angle B of a triangle ABC is thrice the difference of the other two angle also the ratio of the angle A to the angle C is 5 ratio 7 find the angle​

Answer 1

Answer:15/4

Step-by-step explanation:

let angle a and b be 5x and 7x respectively

A.T.Q.

A + B +C =180

3(5X+7X)  +   5X   +   7 X  = 180

15X + 21X + 5X + 7X= 180

48X =180

X=180/48

X=15/4 OR 3.7