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trig formulas

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trig function
equals
sin^2x + cos^2X   1  
1 + tan^2X   sec^2x  
1 + cot^2X   csc^2 X  
sin(-X)   -sinX  
cos(-X)   cosX  
tan (-X)   -tanX  
sin(A + B)   sinAcosB+sinBcosA  
sin(A-B)   sinAcosB-sinBcosA  
cos(A + B)   cosAcosB-sinAsinB  
cos(A-B)   cosAcosB+sinAsinB  
tanx   sinx/cosx  
tan x   1/cotx  
cotx   cosx/sinx  
cotx   1/tanx  
secx   1/cosx  
cscx   1/sinx  
cos[ (pi/2) -x]   sin X  
sin [ (pi/2) -x]   cosX  


   

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