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The angle made by the tangent of the cur...

The angle made by the tangent of the curve `x=a(t+s in tcos t),y=a(1+s in t)^2` with the x-axis at any point on it is `1/4(pi+2t)` (b) `(1-s in t)/(cos t)` `1/4(2t-pi)` (d) `(1+s in t)/(cos2t)`

A

`1/4(pi+2t)`

B

`(1-sin t)/(cost)`

C

`1/4(2t-pi)`

D

`(1+sint)/(cos 2t)`

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A
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