IMPORTENT FORMULAS OF TRIGONOMETRY

 I. Trigonometry Ratio

• sin θ =    Opposite Side/Hypotenuse = p/h
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• cos θ =  Adjacent Side/Hypotenuse = b/h
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• tan θ =  Opposite Side/Adjacent Side = p/b
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• sec θ =  Hypotenuse/Adjacent Side = h/b
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• cosec θ = Hypotenuse/Opposite Side = h/p
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• cot θ = Adjacent Side/Opposite Side = b/p

Note : b = Base    p = Perpendicular    h = hypotenuse

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• II. Relation Between Square Of Different  Types Of Trigonometric ratios

         

           1.  ѕιη²Θ + ¢σѕ²Θ = 1

           2.  ѕє¢²Θ - тαη²Θ = 1

           3. ¢σѕє¢²Θ - ¢σт²Θ = 1