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Rajan@2021
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Asked: 2021-03-08T19:34:53+05:30 In:

If Sin A = 3/4, Calculate cos A and tan A.

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If Sin A = 3/4, Calculate cos A and tan A.
  1. One of the most important question of NCERT of class 10 Based on Trignonetry Chapter for CBSE BOARD. If Sin A = 3/4, Calculate cos A and tan A.
class 10ncert solutiontrignometry
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    1. Guru
      This answer was edited.

      Given sinA=3/4

      Or p/h=3/4

      Let  p=3k and h=4k

      Now By Pythagoras theorem p2 + b2 =h2

      9k2 + b2 =16k2

      b2 = 7k2

      Or  b=+k√7

      Now CosA=b/h=√7/4

      Now tanA=SinA/CosA

      =3/√7

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