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Warm-Up 8/13. What are the six trigonometric functions and the ratios?. Q&A on yesterday’s assignment.

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Warm-Up 8/13

What are the six trigonometric functions and the ratios?

Q&A on yesterday’s assignment.

slide3

Rigor:You will learn the six trigonometric functions and how to use them to solve problems.Relevance:You will be able to solve real world right triangle trigonometry problems using the six trigonometric functions.

6 trigonometric ratios
6 Trigonometric Ratios:

3 basic:

3 additional:

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Since any two right triangles with angle are similar, these ratios are the same, regardless of the size of the triangle.

50

30

5

3

4

40

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not

°

7

hyp

x

Example 3: Find the value of . Round to the nearest tenth, if necessary.

adj

Make sure your calculator is in degrees.

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not

hyp

12

Example 5: Use a trigonometric function to find the measure of . Round to the nearest degree.

15.7

opp

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4-1a Checkpoints: TX p222, 3A; p223, 5A

math!

Find the measure of .

Find the value of .

  • 4-1a Assignment: TX p227, 3-36 DB3