Question

3,4,5 va roooog e urgent

Answer 1

3. a) 38°

b) 148°

4. 2x + 3x + 5° = 180°

5x = 180°-5°

5x = 175°

x = 175°/5

x = 35°

5. ∡AOB + ∡COD + ∡BOC = ∡AOD

12° + 45° + ∡BOC = 90°

57° + ∡BOC = 90°

∡BOC = 90° - 57°

∡BOC = 33°