Question

PLEASE ANSWER FAST ​

Answer 1

1} In triangle ABC

Angle A + Angle B + Angle C = 180

1/2 A + 1/2 B + 1/2 C = 180/2

1/2 B + 1/2 C = 90 - 1/2 A

In triangle BOC

Angle B + Angle C + Angle BOC =180

1/2 B + 1/2 C + Angle BOC = 180

Angle BOC = 90 + 1/2 Angle A

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