Question

Find the value of x

A. 15
B. 5
C. 20
D. 10

Answer 1

B 5

Explanation:

6x + 60 = 90 (right angle)

6x = 30

x = 5

Answer 2

B. 5

Explanation:

We can see that the two angles sum to 90°

⇒ 6x° + 60° = 90°

Subtract 60° from both sides:

⇒ 6x° + 60° - 60° = 90° - 60°

⇒ 6x° = 30°

Divide both sides by 6:

⇒ 6x° ÷ 6 = 30° ÷ 6

⇒ x = 5