How do i prove the trigonometric identity?

label Algebra
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Apr 7th, 2015

RHS

=cot²(x)- cos²(x)
= cos²(x)/sin²(x) - cos²(x) 
= (cos²(x) - cos²(x)sin²(x))/sin²(x) 
= cos²(x)(1 - sin²(x))/sin²(x) 
= cos²(x) * cos²(x)/sin²(x) 
= cos²(x)cot²(x) 
= LHS...................

RHS=LHS....................hence proved


Apr 7th, 2015

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Apr 7th, 2015
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Apr 7th, 2015
Jun 23rd, 2017
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