The values of three angles at a point are 3y – 45o, y + 25o and yo . Find the value of y.
- 40o
- 58o
- 68o
-
76o
The correct answer is: D
Explanation
(3y - 450 + (y + 25) + t = 360o(angles at a point)3y - 45 + y + 25 + y = 360
5y = 360 + 20
5y = 380
y = \(\frac{380}{5}\)
= 76o