Question

OA and OB are opposite rays.If x=42°,what is the value of y?​

Answer 1

We know

A straight angle = 180⁰

Therefore , x + 2y = 180⁰

Given ,

Angle x = 42⁰

42+ 2y = 180⁰

2y = 180⁰ - 42⁰

2y = 138⁰

y = 138/2

y = 69

Answer 2

Answer:

Y is 69

Step-by-step explanation:

x = 42 (given)

so,

42 + 2y = 180
2y = 180 - 42         (transporting)

    = 138

2y is 138

so,

y = 138\2

y is 69