Monday, 16 June 2025

A = 60° and B = 30 deg verify that: sin(A + B) = sin A * cos B + cos A * sin B. [cbse10th 2024]


 

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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)!