If lim x - 0 kx cosec x-lim x - 0 x cosec kx- then k -A- 1B- -1C- 2D- - 2D- - 2

The correct option is C lim_x→ 0kx cosec x = lim_x→ 0 x cosec kx = k lim_x→ 0x/sin x =1/klim_x→ 0kx/sinkx =k=1/k=k=± 1 ...

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Standard Limits to Remove Indeterminate Form

If lim x → 0 ...

Question

If $l i m_{x \to 0}$ kx cosec x = $l i m_{x \to 0}$ x cosec kx , then k =

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-1

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