Maths-
General
Easy
Question
The value of x y, in the adjoining figure is ...............

- 30°,50°
- 40°,60°
- 50°.70°
- 45°,65°
The correct answer is: 40°,60°
x+20+3x=180 (supplementary angles)
4x+20=180
4x=160
x=160/4
x=40 degree
Also
3x+y =180 (supplementary angles)
120+y=180
y=60 degree
y+z=180 (supplementary angles)
60+z=180
z=180-60
z=120 degree
.
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