In the diagram shown, RST is a right-angled triangle and RS = ST = RU. Find
- ∠URT
- ∠RUS
(a)
∠RTS
= (180° - 90°) ÷ 2
= 45° (Isosceles triangle)
∠URT
= 45° - 31°
= 14°
(b)
∠RUS
= (180° - 31°) ÷ 2
= 74.5° (Isosceles triangle)
Answer(s): (a) 14°; (b) 74.5°