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Pearson Geometry Common Core, 2011

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Pearson Geometry Common Core, 2011 View details

5. Law of Sines

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Exercise 25 Page 526

We can find the measure of an angle whose cosine is 0.5875 by pushing 2ND and then COS.

54.02

Practice makes perfect

We will use a calculator to find the measure of an angle whose cosine is 0.5875. To do so, push 2ND and then COS.

If we round the answer to the nearest hundredth, we obtain 54.02.

Subchapter links

Lesson Check p.524

Practice and Problem-Solving Exercises p.525-526

Standardized Test Prep p.526

Mixed Review p.526