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Evaluate the angle with ordered pair (2,-3)for cosine.
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Evaluate the angle with ordered pair (2,-3)for cosine.

User Alex Shestakov
by
5.3k points

1 Answer

6 votes

Answer:


\theta\approx56.31^\circ

Review attached graph and explanation

Explanation:

Since
cos\theta=(adjacent)/(hypotenuse), then
cos\theta=(2)/(√(13))\rightarrow\theta=cos^(-1)((2)/(√(13)))\approx56.31^\circ

Evaluate the angle with ordered pair (2,-3)for cosine.-example-1
User Kenny Peng
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