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Trig identities

reciprocal, quotient, Pythagorean, sum and difference, double angle and half ang

QuestionAnswer
cot A 1/tan⁡A
sec A 1/ cos A
csc A 1/ Sin A
cot A cos A/ sin A
tan A sin A/ cos/A
sin^2 A + cos^2A 1
tan^2A +1 sec^2 A
1 + cot^2A csc^2 A
cos(A-B) cosAcosB + sinAsinB
cos(A+B) cosAcosB - sinAsinB
sin(A-B) sinAcosB - cosAsinB
sin(A+B) sinAcosB + cosAsinB
tan(A + B) (tanA + tanB)/(1-tanAtanB)
tan(A - B) (tanA - tanB)/ (1+tanAtanB)
Created by: deana3
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