Trigonometry
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Is the given equation an identity?
(sinx+cscx)(cosx−secx)=sinxcosx−tanx+cotx+secxcosx\left(\sin x+\csc x\right)\left(\cos x-\sec x\right)=\sin x\cos x-\tan x+\cot x+\sec x\cos x(sinx+cscx)(cosx−secx)=sinxcosx−tanx+cotx+secxcosx
Yes
No