myfriendsareawesome9 myfriendsareawesome9

18-02-2020
Mathematics

contestada

Please help me i rlly need it

Please help me i rlly need it class=

Respuesta :

breanahnnadi440 breanahnnadi440

18-02-2020

Answer:

im stuck on a similar problem right now

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amna04352 amna04352

18-02-2020

Answer:

8.2

Step-by-step explanation:

Use cosine law:

BC² = 7² + 9² - 2(7)(9)cos(60)

BC² = 67

BC = sqrt (67)

BC = 8.1853

BC = 8.2 (nearest tenth)

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