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l
radian
degree
cos^2 x + sin^2 x
1 + tan^2 x
1 + cot^2 x
cos (2nπ + x)
sin (2nπ + x)
sin(-x)
cos(-x)
cos(x+y)
cos(x-y)
cos(π/2-x)
sin(π/2-x)
sin(x+y)
sin(x-y)
cos (π/2 + x)
sin (π/2 + x)
cos (π – x)
sin (π – x)
cos (π + x)
sin (π + x)
cos (2π – x)
sin (2π – x)
tan(x+y)
tan(x-y)
cot(x+y)
cot(x-y)
cos2x
sin2x
tan2x
sin3x
cos3x
tan3x
cosx+cosy
cosx-cosy
sinx+siny
sinx-siny
2cosxcosy
-2sinxsiny
2sinxcosy
2cosxsiny
sinx = 0
cosx = 0
sin x = sin y
cos x = cos y
tan x = tan y
2sin^2 X/2
2cos^2 x/2
tan θ/2
sin(A+B) sin(A-B)
cos(A+B) cos(A-B)
tan(A+B) tan(A-B)
Sine Formula
Cosine Formula
