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Archy [21]
3 years ago
6

Help, please!!! What is the mN?

Mathematics
1 answer:
lisov135 [29]3 years ago
8 0

Answer:

61°

Step-by-step explanation:

Given:

∆MNO,

Side MO (n) = 18

MN (o) = 6

m<O = 17°

Required:

m<N

Solution:

Using the sine rule, \frac{sin N}{n} = \frac{sin O}{o} , solve for N.

Plug in the values of M, n, and m

\frac{sin N}{18} = \frac{sin 17}{6}

Cross multiply

6*sin(N) = sin(17)*18

6*sin(N) = 0.292*18

Divide both sides by 6

\frac{6*sin N}{6} = \frac{0.292*18}{6}

sin N = \frac{0.292*18}{6}

sin N = \frac{5.256}{6}

sin N = 0.876

N = sin^-1(0.876)

N = 61.16

m<N ≈ 61°

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