Question

18. In the adjoining figure, if I
parallel m then the value of x is:
110find value of c(3x - 40°)
​

Answer 1

Answer:

Since l∥m, then

3y=2y+25 [Alternate ∠s]

⇒3y−2y=25

⇒y=25 ......(1)

Also x+15=2y+25 [Vertically opposite ∠s]

⇒x+15=2(25)+25 [using (1)]

⇒x+15=50+25

⇒x=75−15

⇒x=60.(in degrees

Answer 2

Answer:

the answer is 65 degree