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  • 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =
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1 Practice Problems 1. Write the following to 4 decimal places A) sin 34 o = _____ B) cos 34 o = _____ C) tan 4 o = _____ D) cos 84 o = _____ E) tan 30 o = _____ F) cos 18 o = _____

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Page 1: 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =

1

Practice Problems1.Write the following to 4 decimal places

A) sin 34o = _____ B) cos 34o= _____

C) tan 4o = _____ D) cos 84o= _____

E) tan 30o = _____ F) cos 18o= _____

Page 2: 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =

2

Practice Problems

2.Solve for x. Write the answer to 2 decimal places.

A) B) sin7512

o x cos15

18o x

Page 3: 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =

3

.C) D)

E) F)

tan713

o x 5

cos45ox

4cos37o

x

42tan45o

x

Page 4: 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =

4

Chapter 5 Trigonometry

• Consider ABC

• Label the sides as hypotenuse (hyp), opposite (opp), and adjacent (adj) for angle A

A

BC

Page 5: 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =

5

• Label the sides as hypotenuse (hyp), opposite (opp), and adjacent (adj) for angle B

• Note: The opposite and adjacent switches places when switching angles.

• The hypotenuse does not switch. It is always across from the right angle.

A

BC

Page 6: 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =

6

Trig Functions• sin =

• cos =

• tan =

SOHCAHTOASome Old Hippie

Caught Another Hippie Trippin’ On Acid

Page 7: 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =

7

• Write the trig ratios for angle A

A

BC

5

4

3

sin A=

cos A =

tan A =

Page 8: 1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o =

8

Practice:For each of the following triangles find

A) the missing side (to one decimal place)

B) the trig ratios for angles A and B

1.A

BC

13

12


,cos cos o kf

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