Identities For Negatives

  $\displaystyle \sin(-x)= -\sin x$   $\displaystyle \cos(-x)=\cos x$      
  $\displaystyle \csc(-x)= -\csc x$   $\displaystyle \tan(-x)= -\tan x$      
  $\displaystyle \sec(-x)=\sec x$   $\displaystyle \cot(-x)= -\cot x$      




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