1.

(cos h(x))/(1-tan h x) + (sin h(x))/(1-cot h(x)) =

Answer»

`SIN H(X) + COT h(x)`
`tan h (x) + cot h (x)`
`tan h (x) - cot h(x)`
`sin h(x) + COS h(x)`

Answer :D


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