Question

Q9. If angles of a triangle are (x - 10°), (2x + 10°) and 6x° then value of x is 1 O 40° O 30° O 20° O 90°​

Answer 1

Answer:

The x+10,2x−30,x are angles of triangle

By angle sum property

Sum of all angles is 180

x+10+2x−30+x=180

4x−20=180

4x=180+20

4x=200

x=

4

200

x=50