Question

The angle of triangle are X + 10 degree and X + 40 degree and 2 x minus 30 degree find the measure of all the angles

Answer 1

Given :-

angle a = X+10

b = X+40

c = 2x - 30

ATQ

sum of angles of triangle = 180

angle a + b + c. = 180

X+10 + X + 20 + 2x - 40. = 180

4x -10 = 180

4X = 180 + 10 = 190

X = 190÷4

X = 47.5

Therefore , a = X+10

47.5 + 10

57.5

b = X + 20

47.5 + 20

67.5

c= 2x - 40

2 × 47.5 - 40

95- 40

55