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Please help me i rlly need it

Please help me i rlly need it-example-1
User Leodriesch
by
3.8k points

2 Answers

3 votes

Answer:

im stuck on a similar problem right now

User RBee
by
3.5k points
2 votes

Answer:

8.2

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)

User Brightball
by
4.7k points