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Tpy6a [65]
3 years ago
8

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

Mathematics
1 answer:
lutik1710 [3]3 years ago
7 0

Answer:

\theta\approx56.31^\circ

Review attached graph and explanation

Step-by-step explanation:

Since cos\theta=\frac{adjacent}{hypotenuse}, then cos\theta=\frac{2}{\sqrt{13}}\rightarrow\theta=cos^{-1}(\frac{2}{\sqrt{13}})\approx56.31^\circ

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