What is the value of the limit ( lim limits_{x rightarrow frac{ pi}{2}} frac{sin^2 x-1}{cos x} )?

What is the value of the limit ( lim limits_{x rightarrow frac{ pi}

1.	What is the value of the limit ( lim limits_{x rightarrow frac{ pi}{2}} frac{sin^2 x-1}{cos x} )?
A.	0
B.	4
C.	1
D.	Limit does not exist
Answer» B. 4

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