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In DLMN, sin (L + M) = 1. What is m∠N equal to ? (A) 60° (B) 90°(C) 120° (D) 135° |
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Answer» The correct option is (B) 90° Explanation: sin(L + M) = 1 sin(L + M) = sin90° ⇒ L + M = 90° by angle sum property ∠ N = 180– 90° = 90° |
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