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Pearson Algebra 2 Common Core, 2011

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Pearson Algebra 2 Common Core, 2011 View details

3. Right Triangles and Trigonometric Ratios

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Exercise 4 Page 923

We can use a calculator to find the degree of an angle with a given trigonometric ratio. To do so, we first push the 2ND button. Then, we push the SIN, COS, or TAN button.

36.9^(∘)

Practice makes perfect

We can use a calculator to find the degree of an angle with a given trigonometric ratio. To do so, we first push the 2ND button. Then, we push either the SIN, COS, or TAN button. Make sure that your calculator is in degrees mode!

Now we can round the result to the nearest tenth of a degree.

sin^(-1)(0.6)=36.869897...^(∘)

Round to 1 decimal place(s)

sin^(-1)(0.6)=36.9^(∘)

Subchapter links

Lesson Check p.923

Practice and Problem-Solving Exercises p.924-926

Standardized Test Prep p.926

Mixed Review p.926