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In △ABC,c=9, m∠B=65°, and a=105. Find b.

In △ABC,c=9, m∠B=65°, and a=105. Find b.
asked 32.7k views
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In △ABC,c=9, m∠B=65°, and a=105. Find b.

In △ABC,c=9, m∠B=65°, and a=105. Find b.-example-1
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User Wizetux
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7.9k points

1 Answer

4 votes

Answer:

Explanation:

b² = a² + c² - 2ac × cos (m∠B)

b² = 105² + 9² - 2(9)(105)cos65°

b ≈ 101.5

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User Jeremy Blalock
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