What is the value of m in the diagram?
Attached Figure / Diagram
A
20o
B
30o
C
40o
D
50o
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
4m - 15o = m + 75o
(Vertically opposite angles are equal)
4m - m = 75 + 15
3m = 90
m = \(\frac{90}{3}\)
m = 30o
Source: Myschool Past Questions Archive (Record #36601)