# The following sentences are the steps involved in proving the result (cosx)/(1-tanx)+(sinx)/(1-cotx)=cosx+sinx. Arrange them in sequential order fro

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The following sentences are the steps involved in proving the result (cosx)/(1-tanx)+(sinx)/(1-cotx)=cosx+sinx. Arrange them in sequential order from first to last.
A. (cos^(2)x)/(cosx-sinx)+(sin^(2)x)/(sinx-cosx)
B. (cos^(2)x-sin^(2)x)/(cosx-sinx)
C. (cosx)/(1-(sinx)/(cosx))+(sinx)/(1-(sinx)/(sinx))
D. (a) (A), (B) and (C)
(C), (A) and (B)
(C), (B) and (A)

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(c),(A) and(D) are in sequential order from first to last.