Q.2507 : किसी Δ ABC में यदि ∠A - ∠B = 45° तथा ∠B

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Q.2507 : किसी Δ ABC में यदि ∠A - ∠B = 45° तथा ∠B - ∠C 30° हो ∠A + ∠B= ?
(a) 150°
(b) 155°
(c) 145°
(d) 135°

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Answer :155°