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Express your answer exactly

Express your answer exactly-example-1
User Mingebag
by
8.8k points

1 Answer

3 votes

Answer:

cos(Θ) = 84/85

Explanation:

See the attachment.

Sine is opposite divided by hypotenuse. Here, the "opposite" side is -13 and the hypotenuse is 85. Cosine is adjacent divided by hypotenuse. The "adjacent" side is the unlabelled length. We find this by using the Pythagorean Theorem:

b =
√(85^2-(-13)^2) =√(7225-169) =√(7056) =84

So, cos(Θ) = 84/85

Hope this helps!

Express your answer exactly-example-1
User Tom Rutchik
by
8.1k points

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