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84notes.notebook January 19, 2016 84 TB p. 573575 #1745 odd HW: Warm Up

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Page 1: HW: 84 TB p. 573575 #1745 oddteachers.stjohns.k12.fl.us/jasper-k/files/2016/01/8-4notescompleted.pdfObiective To use the sine, cosine, and tangent ratios to determine side lengths

8­4notes.notebook January 19, 2016

8­4 TB p. 573­575 #17­45 odd HW:

Warm Up

Page 2: HW: 84 TB p. 573575 #1745 oddteachers.stjohns.k12.fl.us/jasper-k/files/2016/01/8-4notescompleted.pdfObiective To use the sine, cosine, and tangent ratios to determine side lengths

8­4notes.notebook January 19, 2016

Trig Practice with FSA calculators.

pick one up and get your wb

plus: announcement!

Page 3: HW: 84 TB p. 573575 #1745 oddteachers.stjohns.k12.fl.us/jasper-k/files/2016/01/8-4notescompleted.pdfObiective To use the sine, cosine, and tangent ratios to determine side lengths

8­4notes.notebook January 19, 2016

Step 1:  Identify the reference angle (one of the acute).

Step 2:  Label your triangle sides as opposite, adjacent and hypotenuse.

Step 3:  Identify the proper Trig Ratio and write your equation.

Page 4: HW: 84 TB p. 573575 #1745 oddteachers.stjohns.k12.fl.us/jasper-k/files/2016/01/8-4notescompleted.pdfObiective To use the sine, cosine, and tangent ratios to determine side lengths

8­4notes.notebook January 19, 2016

38

x49

A

B C

1.  Identify reference angle.

2.  Identify sides.

3.  Identify trig ratio.

4.  Write the trig equation.

5.  Solve the equation.

(a)  Exact answer.

(b)  Decimal answer (round to nearest tenth)

52

x26

A

B C

63

x

A

B C18

35

x

A

B C45

 x

24

A

B C18

What is different about this picture than the ones for the previous problems?

To find the measure of one of the acute angles of a right triangle, we will use the inverse of our Trig Ratios.

we will get to this on Tuesday 1/19!

Page 5: HW: 84 TB p. 573575 #1745 oddteachers.stjohns.k12.fl.us/jasper-k/files/2016/01/8-4notescompleted.pdfObiective To use the sine, cosine, and tangent ratios to determine side lengths

8­4notes.notebook January 19, 2016