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19 Cards in this Set
- Front
- Back
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Reciprocal Identity:
Cotx |
cotx=1/Tanx
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Reciprocal Identity:
Secx |
secx=1/cosx
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Reciprocal Identity:
Cscx |
cscx=1/sinx
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Quotient Identity
tanx |
sinx/cosx
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Quotient Identity
cotx |
cosx/sinx
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Pythagorean identity:
sin^2x= |
sin^2x=1-cos^2x
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Pythagorean identity:
cos^2= |
cos^2=1-sin^2x
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Pythagorean identity:
Sec^2x= |
Sec^2x=1+tan^2x
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Pythagorean identity:
csc^2x= |
csc^2x=1+cot^2x
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Pythagorean identity:
1= |
1=cos^2+sin^2x
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Sum identity:
cos(a+b)= |
cos(a+b)=cosa*cosb-sina*sinb
(difference identity, switch signs) |
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Sum identity:
sin(a+b)= |
sin(a+b)=sina*cosb+cosa*sinb
(difference identity, switch signs) |
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Sum identity:
tan(a+b)= |
tan(a+b)=tana+tanb/1-tana*tanb
(difference identity, switch signs) |
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Double angle identity:
sin2x= |
sin2x=2sinxcosx
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Double angle identity:
cos2x= |
cos2x=cos^2x+sin^2x
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Double angle identity:
cos2x= |
cos2x=2cos^2x-1
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Double angle identity:
cos2x= |
cos2x=1-2sin^2x
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Double angle identity:
tan2x= |
tan2x=2tanx/1-tan^2x
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angle between lines
tanx= |
tanx=m2-m1/1+m2m1
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