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12-02-2022
Mathematics

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

In ABCc9 mB65 and a105 Find b class=

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xenia168 xenia168

12-02-2022

Answer:

Step-by-step explanation:

b² = a² + c² - 2ac × cos (m∠B)

b² = 105² + 9² - 2(9)(105)cos65°

b ≈ 101.5

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