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Area of a triangle formed by tangent an...

Area of a triangle formed by tangent and normal to the curve `(x^(2))/(a^(2))+(y^(2))/(b^(2))=1` at P`((a)/(sqrt(2)),(b)/(sqrt(2)))` with the X-axis is

A

4ab

B

`(ab sqrt(a^(2)+b^(2)))/(4)`

C

`(ab sqrt(a^(2)-b^(2)))/(4)`

D

`(b(a^(2)+b^(2)))/(4a)`

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