If \[\underset{x\to 0}{\mathop{\lim }}\,kx\,\text{cosec}\,x=\underset{x\to 0}{\mathop{\lim }}\,x\,\text{cosec}\ kx\], then \[k=\]

If \[\underset{x\to 0}{\mathop{\lim }}\,kx\,\text{cosec}\,x=\underset{

1.	If \[\underset{x\to 0}{\mathop{\lim }}\,kx\,\text{cosec}\,x=\underset{x\to 0}{\mathop{\lim }}\,x\,\text{cosec}\ kx\], then \[k=\]
A.	1
B.	?1
C.	\[\pm 1\]
D.	\[\pm \,2\]
Answer» D. \[\pm \,2\]

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If \[\underset{x\to 0}{\mathop{\lim }}\,kx\,\text{cosec}\,x=\underset{x\to 0}{\mathop{\lim }}\,x\,\text{cosec}\ kx\], then \[k=\]

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