In a ΔABC, the bisectors of ∠B and ∠C meet at point O, inside the triangle. If ∠BOC = 122°, then the measure of ∠A is:
Show answer & explanation
Correct answer: B
Explanation
Correct answer is option 2 i.e. 64°
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Concept |
Understanding |
Application |
Fair calculation |
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In case of angle bisector, ∠BOC = 90° + (∠A/2) |
Given ∠BOC = 122° |
122 = 90 + (A/2) A = 64° |
(122 – 90) × 2 = 64 |