Question

Please help me with this. It's due today and It's my final chance! I will give brain if you help me. Thanks

Answer 1

see explanation

Explanation:

∠a = 90° (as indicated by the square on the angle )

∠a, b and c form a straight angle = 180°, hence

b = 180° - (a + 59)°

= 180° - (90 + 59)° = 180 - 149° = 31°

∠c is vertically opposite a + b = 90 + 31 = 121° ⇒ c = 121°

∠d is vertically opposite 59° ⇒ d = 59°