A curve is represented by the equation \[x=se{{c}^{2}}t\]and\[y=cot\text{ }t\], where t is a parameter. If the tangent at the point P on the curve where \[t=\pi /4\] meets the curve again at the point Q, then \[\left| PQ \right|\] is equal to

A curve is represented by the equation \[x=se{{c}^{2}}t\]and\[y=cot\te

1.	A curve is represented by the equation \[x=se{{c}^{2}}t\]and\[y=cot\text{ }t\], where t is a parameter. If the tangent at the point P on the curve where \[t=\pi /4\] meets the curve again at the point Q, then \[\left\| PQ \right\|\] is equal to
A.	\[\frac{5\sqrt{3}}{2}\]
B.	\[\frac{5\sqrt{5}}{2}\]
C.	\[\frac{2\sqrt{5}}{3}\]
D.	\[\frac{3\sqrt{5}}{2}\]
Answer» E.

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A curve is represented by the equation \[x=se{{c}^{2}}t\]and\[y=cot\text{ }t\], where t is a parameter. If the tangent at the point P on the curve where \[t=\pi /4\] meets the curve again at the point Q, then \[\left| PQ \right|\] is equal to

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