Question

4. If ray OC stands on line AB such that ∠AOC = ∠BOC, then find ∠BOC.​

Answer 1

Since ray OC stands on line AB. Therefore ∠AOC + ∠COB = 180° (Linear pair of angles) But ∠AOC = ∠COB (given) ⇒ 2∠AOC = 180° ⇒ ∠AOC = 90°