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Flag IIT JEE Entrance Exam> cosx = ½ (x + 1/x ) then ½ x 2 + 1/x 2 =...
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cosx = ½ (x + 1/x ) then ½ x2 + 1/x2 =

jacob , 10 Years ago
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anser 1 Answers
Sourabh Singh

Last Activity: 10 Years ago

Hii



apply whole square on both sides of

cosx = ½ (x + 1/x )



you will get what is asked on the right hand side .








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