1 practice problems 1.write the following to 4 decimal places a)sin 34 o = _____ b) cos 34 o = _____...
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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= _____
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Practice Problems
2.Solve for x. Write the answer to 2 decimal places.
A) B) sin7512
o x cos15
18o x
3
.C) D)
E) F)
tan713
o x 5
cos45ox
4cos37o
x
42tan45o
x
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Chapter 5 Trigonometry
• Consider ABC
• Label the sides as hypotenuse (hyp), opposite (opp), and adjacent (adj) for angle A
A
BC
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• 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
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Trig Functions• sin =
• cos =
• tan =
SOHCAHTOASome Old Hippie
Caught Another Hippie Trippin’ On Acid
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• Write the trig ratios for angle A
A
BC
5
4
3
sin A=
cos A =
tan A =
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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
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