Flashcards
Trigonometry Formulas
Flashcards do conjunto (55)
- 1lr x Ө
- 2radianπ/180 x degree
- 3degree180/π x radian measure
- 4cos^2 x + sin^2 x1
- 51 + tan^2 xsec^2x
- 61 + cot^2 xcosec^2x
- 7cos (2nπ + x)cosx
- 8sin (2nπ + x)sinx
- 9sin(-x)-sinx
- 10cos(-x)cosx
- 11cos(x+y)cosxcosy-sinxsiny
- 12cos(x-y)coxcosy+sinxsiny
- 13cos(π/2-x)sinx
- 14sin(π/2-x)cosx
- 15sin(x+y)sinxcosy+cosxsiny
- 16sin(x-y)sinxcosy-cosxsiny
- 17cos (π/2 + x)-sinx
- 18sin (π/2 + x)cosx
- 19cos (π – x)–cos x
- 20sin (π – x)sin x
- 21cos (π + x)– cos x
- 22sin (π + x)–sin x
- 23cos (2π – x)cos x
- 24sin (2π – x)–sin x
- 25tan(x+y)tanx+tany / 1-tanxtany
- 26tan(x-y)tanx-tany / 1+tanxtany
- 27cot(x+y)cotxcoty-1 / coty+cotx
- 28cot(x-y)cotxcoty+1 / coty-cotx
- 29cos2x:cos^2 x - sin^2 x
:2cox^2 x - 1
:1-2sin^2 x
:1-tan^2 x / 1+tan^2 x - 30sin2x:2sinxcosx
:2tanx / 1+tan^2 x - 31tan2x2tanx / 1-tan^2 x
- 32sin3x3sinx - 4sin^3 x
- 33cos3x4cos^3 x - 3cosx
- 34tan3x3tanx-tan^3 x / 1-3tan^2 x
- 35cosx+cosy2cosx+y/2 cosx-y/2
- 36cosx-cosy-2sinx+y/2 sinx-y/2
- 37sinx+siny2sinx+y/2 cosx-y/2
- 38sinx-siny2cosx+y/2 sinx-y/2
- 392cosxcosycos(x+y) + cos(x-y)
- 40-2sinxsinycos(x+y) - cos(x-y)
- 412sinxcosysin(x+y) + sin(x-y)
- 422cosxsinysin(x+y) - sin(x-y)
- 43sinx = 0→x = nπ
- 44cosx = 0→x = (2n+1)(π/2)
- 45sin x = sin y⇒ x = nπ + (–1)^n y
- 46cos x = cos y⇒ x = 2nπ ±y
- 47tan x = tan y⇒ x = nπ + y
- 482sin^2 X/21 - cosx
- 492cos^2 x/21 + cosx
- 50tan θ/21-cosθ / sinθ
- 51sin(A+B) sin(A-B):sin^2 A - cos^2 B
:cos^2 B - cos^2 A - 52cos(A+B) cos(A-B):cos^2 A - sin^2 B
:-sin^2 A + cos^2 B - 53tan(A+B) tan(A-B)tan^2 A-tan^2 B / 1-tan^2 A tan^2 B
- 54Sine FormulasinA/a = sinB/b = sinC/c = k
- 55Cosine Formula:a^2 = b^2 + c^2 -2bccosA
:b^2 = c^2 + a^2 -2cacosB
:c^2 = a^2 + b^2 -2abcosC
:CosA = (b^2 +c^2 -a^2)/2bc
:CosB = (c^2 +a^2 -b^2)/2ac
:CosC = (a^2 +b^2 -c^2)/2ab
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- Trigonometry Formulas to memorize!
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- mariaahbanu
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