Question

The given figure shows a triangle ABC in which angle B 70 degree angle C 60 degree and AD bisects angle BAC . By finding all sngles of triangle ABD and all angles of triangle ACD shows that

Answer 1

at the angle A and angle d be x and
sum of 3 angles is equal to 180 degree therefore x + X + 70 degree is equal to 180 degree and 2 X + 70 degree is equal to 180 degree and and 2 x is equal to 180 degree minus 70 degree and 2 x is equal to 110 / 2 and then you will get the angle of a and d will be 55 degree the angle of a and d angle ABD let the angle B and Angle A be x sum of 3 angles is equal to 180 degrees therefore X + X + 60 degrees equal to 180 degree
2 X + 60 degrees equal to 180 degree 2 x is equal to 180 degree minus 60 degree equal to 120 degree then 2 x is equal to 120 degree and x is equal to 120 by 2 is equal to 60 degree answer a and b is equal to 60 degree