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HELP ME PLEASE IM SO FRSTRATED

HELP ME PLEASE IM SO FRSTRATED-example-1

1 Answer

1 vote

Answer:

x = 13.3

Explanation:

Use the cosine law:

x^2 = (8)^2 + (18)^2 -2(8)(18)cos43

= 64 + 324 - 288cos43

= 177.3

x = 13.3

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