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Pavlova-9 [17]
3 years ago
10

Given the triangle below, what is m < B, rounded to the nearest tenth

Mathematics
2 answers:
aalyn [17]3 years ago
4 0

Answer:

Therefore m∠ B is 42.1°

Step-by-step explanation:

Given:

In Δ ABC

AB = 15 = c

AC = 18 = b

∠ C = 34°

To Find:

∠ B = ?

Solution:

In Δ ABC We have Sine Rule as

\frac{a}{\sin A}= \frac{b}{\sin B}= \frac{c}{\sin C}

Substituting the given values we get

\frac{b}{\sin B}= \frac{c}{\sin C}

\frac{18}{\sin B}= \frac{15}{\sin 34}\\\\\sin B=0.671\\\\\therefore B=\sin^{-1}(0.671)=42.14\°

Therefore m∠ B is 42.1°

solmaris [256]3 years ago
4 0

Answer:42.1

Step-by-step explanation:

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