Sunday, 3 August 2025

Prove that (1+sin2x-cos2x)/(1+sin2x+cos2x) = tanx. (ncert)


 

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If find x. 1/(9!) + 1/(10!) = x/(11!).

  Here n! is read as n factorial. It can be written as n(n-1)! or n(n-1)(n-1)!