What is the value of m in the diagram?
-
A.
20o -
B.
30o -
C.
40o -
D.
50o
Correct Answer: Option B
Explanation
4m – 15o = m + 75o
(Vertically opposite angles are equal)
4m – m = 75 + 15
3m = 90
m = (frac{90}{3})
m = 30o
4m – 15o = m + 75o
(Vertically opposite angles are equal)
4m – m = 75 + 15
3m = 90
m = (frac{90}{3})
m = 30o