Question
If limx→0(1+asinx)cosecx=3, then a is
Answer: Option B
:
B
3=limx→0(1+asinx)cosecx
[1∞form]⇒limx→0ecosecx.asinx=ea
∴ea=3⇒a=loge3=ln3.
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:
B
3=limx→0(1+asinx)cosecx
[1∞form]⇒limx→0ecosecx.asinx=ea
∴ea=3⇒a=loge3=ln3.
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