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trig angle relations

trig angle relationships, adding and subtracting 180 and 90

QuestionAnswer
sin(x+180) -sinx
cos(x+180) -cosx
tan(x+180) tanx
sin(180-x) sinx
cos(180-x) -cosx
tan(180-x) -tanx
sin(x+90) cosx
cos(x+90) -sinx
tan(x+90) -cotx
sin(90-x) cosx
cos(90-x) sinx
tan(90-x) cotx
sin(-x) -sinx
cos(-x) cosx
tan(-x) -tanx
sin(270-x) -cosx
cos(270-x) -sinx
tan(270-x) cotx
sin(x+270) -cosx
cos(x+270) sinx
tan(x+270) -cotx
Created by: Focus: Hope
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