85.2k views
4 votes
In ΔLMN, m = 450 inches, m∠M=74° and m∠N=41°. Find the length of l, to the nearest 10th of an inch.

1 Answer

5 votes

Answer:

424.3 in

Explanation:

You want the measure of side l in ∆LMN with m = 450 in, M = 74°, and N = 41°.

Law of sines

The triangle can be solved using the law of sines:

l/sin(L) = m/sin(M)

Angle L is the third angle in the triangle:

L = 180° -74° -41° = 65°

Then the side length is ...

l = m·sin(L)/sin(M) = (450 in)·sin(65°)/sin(74°) ≈ 424.3 in

The length of l is about 424.3 inches.

<95141404393>

In ΔLMN, m = 450 inches, m∠M=74° and m∠N=41°. Find the length of l, to the nearest-example-1
User Imran
by
7.7k points