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oee [108]
3 years ago
10

In triangle ABC, c = 8, b = 6, and ∠C = 60°. sin∠B = _____

Mathematics
2 answers:
satela [25.4K]3 years ago
6 0
Hello,

sin B/b=sin C/c
==>sin B=√3 / 2 * 6/8=3√3 /8
mojhsa [17]3 years ago
3 0

Answer:

sin∠B=0.649°  

Step-by-step explanation:

Given: In triangle ABC, c = 8, b = 6, and ∠C = 60°.

To find: sin∠B

Solution: using the sine formula that is \frac{SinA}{a}=\frac{SinB}{b}=\frac{SinC}{c}, we get

\frac{SinA}{a}=\frac{SinB}{6}=\frac{Sin60^{\circ}}{8}

Taking the second and third  equality, we get

\frac{SinB}{6}=\frac{Sin60^{\circ}}{8}

⇒\frac{SinB}{6}=\frac{\frac{\sqrt{3}}{2}}{8}

⇒\frac{SinB}{6}=\frac{\sqrt{3}}{16}

⇒SinB=\frac{\sqrt{3}{\times}6}{16}

⇒SinB=\frac{3\sqrt{3}}{8}

⇒SinB=0.649^{\circ}

Thus, SinB=0.649^{\circ}.

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