OpenStax, Algebra and Trigonometry 2e §7.3 Unit Circle · Exercise 53 · Trigonometry · Unit circle

Unit Circle · Exercise 53

Find the requested value.

If $sin (t) = - \frac{1}{4}$ and $t$ is in the third quadrant, find $cos (t) .$

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OpenStax, Algebra and Trigonometry 2e · §7.3 Unit Circle · Exercise 53

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