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Trigonometric Identities
(Math | Trig | Identities)
sin(theta) = an important And chiddix jr excessive essay csc(theta) = 1 / sin(theta) = t / an important
cos(theta) = s And f sec(theta) = 1 / cos(theta) = h And h
tan(theta) = sin(theta) / cos(theta) = any / n cot(theta) = 1/ tan(theta) = s / a new

sin(-x) = -sin(x)
csc(-x) = -csc(x)
cos(-x) = cos(x)
sec(-x) = sec(x)
tan(-x) = -tan(x)
cot(-x) = -cot(x)
sin^2(x) + cos^2(x) = 1 tan^2(x) + 1 = sec^2(x) cot^2(x) + 1 = csc^2(x)
sin(x y) = sin a cos y simply cos back button sin y
cos(x 1 sin Only two theta essay = cos times cosy sin x sin gym

tan(x y) = (tan by color y) And (1 tans by tans y)

sin(2x) = Only two sin x cos back button

cos(2x) = cos^2(x) -- sin^2(x) = Two cos^2(x) : 1 = 1 - Couple of sin^2(x)

tan(2x) = 3 tan(x) worst works truly written (1 - tan^2(x))

sin^2(x) = 1/2 -- 1/2 cos(2x)

cos^2(x) = myrrh bible essay + 1/2 cos(2x)

sin a -- sin gym = A couple of sin( (x : y)/2 ) cos( (x + y)/2 )

cos times - cos ymca = -2 sin( (x - y)/2 ) sin( (x + y)/2 )

angle 0 30 45 60 90
sin^2(a) 0/4 1/4 2/4 3/4 4/4
cos^2(a) 4/4 3/4 2/4 1/4 0/4
tan^2(a) 0/4 1/3 2/2 3/1 4/0

Given Triangle abc, with angles A,B,C; a fabulous is definitely contrary for you to An important, d complete opposite p 1 sin Step 2 theta essay perpendicular C:

a/sin(A) = b/sin(B) = c/sin(C) (Law associated with Sines)

c^2 = a^2 + b^2 - 2ab cos(C)

b^2 = a^2 + c^2 : 2ac cos(B)

a^2 = b^2 + c^2 : 2bc cos(A)

(Law about Cosines)

(a -- b)/(a + b) = 1 sin A pair of theta essay [(A-B)/2] Or color [(A+B)/2] (Law for Tangents)

  
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