Please evaluate q 22?

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1 Answer
Abhishek K.
May 3, 2018

#rarra=x+1/x=(x^2+1)/x#

If #x# is any non-zero real number then the value #a# will always be greater than or less than 1 but the value of #sintheta and costheta# lies between #[-1,1]#. So, the #sintheta and costheta# can never be equal to #a# in the case mentioned in the question.

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