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Deepak Bora
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Asked: 2020-07-26T19:53:01+05:30 In:

If sin A = 3/4 , calculate sec A

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CBSE 10th Class past year question paper

Year 2019

SET 1, Code Number – 30/2/1

Question number – 4 (b)

cbse 10th classncert classprevious year paper
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    1. Newbie
      This answer was edited.

      sin A = 3/4

      sin² A + cos² A = 1

      cos A = √ { 1 – ( 9/16) }

      cos A = √7/4

      sec A = 4/√7

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