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Pre Cal Formulas
Unit Cirlce Formulas
26
Mathematics
11th Grade
05/22/2006
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Term
Reciprocal SecB
 Definition
Reciprocal 1/cosB
Term
Reciprocal CscB
 Definition
Reciprocal 1/SinB
Term
Reciprocal CotB
 Definition
Reciprocal 1/TanB
Term
Cofunction CosX
 Definition
Cofunction Sin(pi/2-X)
Term
Cofunction CscX
 Definition
Cofunciton Sec(pi/2-X)
Term
Cofunction CotX
 Definition
Cofunction Tan(pi/2-X)
Term
odd or even? Sin
 Definition
Odd
Term
Odd or even? Tan
 Definition
odd
Term
odd or even? Csc
 Definition
Odd
Term
odd or even? Cot
 Definition
Odd
Term
odd or even? Cos
 Definition
Even
Term
odd or even? sec
 Definition
Even
Term
Odd Formula
 Definition
sin(-x)=-sin(x)
Term
Even Formula
 Definition
cos(-x)=cos(x)
Term
Pyth sin/cos
 Definition
sin(sq)x + cos(sq)x = 1
Term
Pyth tan/sec
 Definition
Sec(sq)x - Tan(sq)x = 1
Term
Pyth Csc/Cot
 Definition
Csc(sq)x - Cot(sq)x = 1
Term
sin(u+-v)
 Definition
sinu*sinv+-sinv*cosu
Term
cos(u+-v)
 Definition
cosu*cosv-+sinv*sinu (opp sign)
Term
Tan(u+-v)
 Definition
tanu+-tanv/
1-+tanu*tanv
Term
sin2X
 Definition
2sinxcosx
Term
cos2x
 Definition
1-2sin(sq)x

cos(sq)x-sin(sq)x

2cos(sq)x-1
Term
sin1/2x
 Definition
+-(sqrt)1/2(1-cosx)
Term
cos1/2x
 Definition
+-(sqrt)1/2(1+cosx)
Term
tan2x
 Definition
2tanx/
(1-tan(sq)x)
Term
tan1/2x
 Definition
sinx/
(1+cosx)
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