Question

O is the circumcenter of triangle ABC and D is the midpoint of BC if angle BAC equals to 40° find angle BOD​

Answer 1

Answer:

angle BAC = angle BOD = 40⁰

Step-by-step explanation:

Thinking Process

Firstly, prove that ΔBOD and ΔCOD are congruent by SSS rule. Further, use the theorem that in a circle, the angle subtended by an arc at the centre is twice the angle subtended by it at the remaining part of the circle and prove the required result.