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precalc ch6 formulas

QuestionAnswer
_+_=1 sin^2x+cos^2x=1
_=1-_ (2 answers) sin^2x=1-cos^2x AND flip sin and cos
1+_=_ (2 answers) 1+cot^2x=csc^2x AND 1+tan^2x=sec^2x
cos(a-B)= cosacosB+sinasinB
cos(a+B)= cosacosB-sinasinB
sin(a-B)= sinacosB-cosasinB
sin(a+B)= sinacosB+cosasinB
sin2x= 2sinxcosx
cos2x= (three answers) cos^2x-sin^2x AND 1-2sin^2x AND 2cos^2x-1
tan(a-B)= tana-tanB/1+tanatanB
tan(a+B)= tana+tanB/1-tanatanB
tan2x= 2tanx/1-tan^2x
Created by: 113805
 

 



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