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Geometry
Chapter 8&9
8
Mathematics
10th Grade
03/28/2011
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Term
45-45-90 Triangle Theorem
 Definition
In a 45-45-90 Triangle, the legs are congruent and the length of the hypotenuse is radical 2 times the length of a leg.
Term
30-60-90 Triangle Theorem
 Definition
In a 30-60-90 Triangle, the length of the hypotenuse is 2 times the length of the shorter leg, and the length of the longer leg is radical 3 times the length of the shorter leg.
Term
Cosine A Ratio
 Definition
Cos A=Adj/Hyp or B/C
Term
Cosine B Ratio
 Definition
Cos B=Adj/Hyp or A/C
Term
Sine A Ratio
 Definition
Sine A=Opp/Adj or A/C
Term
Sine B Ratio
 Definition
Sine B=Opp/Hyp or B/C
Term
Tangent A Ratio
 Definition
Tangent A=Opp/Adj or A/B
Term
Tangent B Ratio
 Definition
Tangent B=Opp/Adj or B/A
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