sin (n+1)x cos(n+2)x-cos(n+1)x sin(n+2)x=

-sinx

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sinx

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cosx

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-cos x

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Solution

The correct option is A
-sinx

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Similar questions

sin(n + 1)x sin ( n+2 )x + cos(n+1)x cos (n+2)x = cos x

sin (n + 1) x sin (n + 2) x + cos (n + 1) x cos (n + 2) x = cos x

sin (n + 1) x sin (n + 2) x + cos (n + 1) x cos (n + 2) x = cos x

sin (n + 1) x sin (n + 2) x + cos (n + 1) x cos (n + 2) x = cos x

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