Question

Calculate the value of x in each of the following
​

Answer 1

A) 50
B) 120
C) 60
D) 25

Answer 2

Answer:

1. x+40°=90°

x=90°-40°

x=50°

2. x+60°=180°

x=180°-60°

x=120°

3. x+60°=120°

x=120°-60°

x=60°

4. x+45°=70°

x=70°-45°

x=25°