5.2 right triangle trigonometrystaffweb.psdschools.org/kemotich/mrs_motichka/precalculus a/chapter...
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hypotenuse
opposite
adjacent
5.2 Right Triangle Trigonometry
Objective: Find rectangular points on the unit circle.
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hypotenuse
opposite
adjacent
The "BIG 3" functions are defined:
SOH CAH TOA
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There are three more functions, but they are just reciprocals of the big 3.
sine cosine tangentcosecant secant cotangent
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Special Right Triangle Relationships
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1245
45
o
o
1
23
30
60
o
o
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Fill in the degrees and radians for every multiple of 45 and 30.oo
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(1, 0 )(1, 0 )
(0, 1 )
(0, 1 )
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( +, + )( , + )
( , )( +, )
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yr
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opposite
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yr
sin = yr
cos = xr
tan = yx
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5.2 A worksheet
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