Question

In DLMN, sin (L + M) = 1. What is m∠N equal to ?

(A) 60°

(B) 90°

(C) 120°

(D) 135°

Answer 1

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°