Question

the adjoining diagram shows to intersecting straight line .find the value of x y z

Answer 1

3x - 10 = 2x + 15 (vertically opp angles are equal)
x = 25
2x + 15 +y = 180 ( linear pair)
50+15+y = 180
y =115
z = y = 115 ( vertically opp angles are equal)

hope it helps.....:-)

Answer 2

Since vertically opp. angles are equal,
3x-10=2x+15
=)3x-2x=15+10
=)x=25°
Then,
By linear pair,
y+2x+15=180°
=)y+50+15=180
=)y=180-65
=)y=115°
Since, y=z (V.O.A are equal)
Hence, z=115°
Hope it helps u.