Question

9

Find the values of r and y.
с
A
95°
B
4x
ro
D
E

Answer 1

• x = 18°, y = 167°

Explanation:

In right triangle sum of two angles is 90°

• 4x + x = 90°
• 5x = 90°
• x = 90°/5
• x = 18°

Angle y is exterior angle and equals non-adjacent interior angles

• y = 4x + 95° =
• 4*18° + 95° =
• 72° + 95° =
• 167°