LİMA + sin(θ) = a / c csc(θ) = 1 / sin(θ) = c / a cos(θ) = b / c
sec(θ) = 1 / cos(θ) = c / b tan(θ) = sin(θ) / cos(θ) = a / b cot(θ) = 1/ tan(θ) = b / a
sin(-x) = -sin(x)
csc(-x) = csc(x) sin2 (x) + cos2(x) = 1
cos(-x) = cos(x) tan2(x) + 1 = sec2(x)
sec(-x) = sec(x) tan2(x) + 1 = sec2(x)
tan(-x) = -tan(x) cot2(x) + 1 = csc2(x)
cot(-x) = -cot(x)
sin(x y) = sin x cos y cos x sin y
cos(x y) = cos x cosy sin x sin y
tan(x y) = (tan x tan y) / (1 tan x tan y)
sin(2x) = 2 sin x cos x
cos(2x) = cos2(x) - sin2(x) = 2 cos2(x) - 1 = 1 - 2 sin2(x)
tan(2x) = 2 tan(x) / (1 - tan2(x))
sin2(x) = 1/2 - 1/2 cos(2x)
cos2(x) = 1/2 + 1/2 cos(2x)
sin x - sin y = 2 sin( (x - y)/2 ) cos( (x + y)/2 )
cos x - cos y = -2 sin( (x - y)/2 ) sin( (x + y)/2 )
