1.

Observe the following statements for the curve x=a( cos t + log tan 1/2), y=a sin t I : Slope of the tangent at any point is tant II : Length of the tangent at any point is constant III : Length of the sub-tangent at any point is | a cos t|

Answer»

only I,II are true
only II,III are true
only I,III are true
I,II,III are true

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