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[Post New]29 Apr 2007 00:50:11 IST
    Subject: ALL TRIGNOMETRY FORMULAS
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INDIAN_ARMY19890 (1284)

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Olaaa!! Perrrfect answer. 228  [300 rates]
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  • Reciprocal Properties:

  • Quotient Properties:
         
  • Pythagorean Properties:
  • Odd and Even Function Properties:
    sin(-x) = -sin x
    cos(-x) = cos x
    tan(-x) = -tan x
    cot(-x) = -cot x
    sec(-x) = sec x
    csc(-x) = -csc x
    •  
  • Cofunction Properties for Circular Functions:
  • Cofunction Properties for Trigonometric Functions:

  • Composite Argument Property:

    cos (A - B) = cosA cosB + sinA sinB
    cos (A + B) = cosA cosB - sinA sinB
    sin (A - B) = sinA cosB - cosA sinB
    sin (A + B) = sinA cosB + cosA sinB



    •  
  • Double-Argument Properties:
    sin 2x = 2 sinx cosx
    cos 2x = cos2x - sin2x = 1 - 2 sin2x = 2 cos2x - 1




  • Half-Argument Properties:



  • Sum and Product Properties:
    2 cos A cos B = cos(A + B) + cos(A - B)
    2 sin A sin B = -cos(A + B) + cos(A -B)
    2 sin A cos B = sin(A + B) + sin(A -B)
    2 cos A sin B = sin(A + B) - sin (A -B)




    •  
     
    sin()
    cos()
    tan()
    cot()
    sec()
    csc()
    0
    0
    1
    0
    1
    /6
    1/2
    /2
    /3
    2/3
    2
    /4
    /2
    /2
    1
    1
    /3
    /2
    1/2
    /3
    2
    2/3
    /2
    1
    0
    0
    1
    2/3
    /2
    -1/2
    -
    -/3
    -2
    2/3
    3/4
    /2
    -/2
    -1
    -1
    -
    5/6
    1/2
    -/2
    -/3
    -
    -2/3
    2
    0
    -1
    0
    -1

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