Question

Find the value of x if ∠AOB is a right angle

Answer 1

Given that ∠AOB = 90°

∠AOB = ∠AOC + ∠COB = 90°  ...(Adjacent angles)

3x + 2x = 90°

5x = 90°

x = `(90^circ)/5`

= 18°

x = 18°