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If x = a sec theta, y = b tan theta " th...

If `x = a sec theta, y = b tan theta " then " (dy)/(dx) =` ?

A

` (b)/(a) sin theta `

B

` (b)/(a) cosec theta `

C

` (a)/(b) cos theta `

D

`(a)/(b) sectheta `

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The correct Answer is:
B
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NIKITA PUBLICATION-DIFFERENTIATION -MCQ
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  2. If x =a cot theta , y=b cosec theta ,then (dy)/(dx)=

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  3. If x = a sec theta, y = b tan theta " then " (dy)/(dx) = ?

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  4. If x =asec theta,y = atan theta , then" at" theta =(pi)/( 4) ,(dy)/(d...

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  5. If x=acos^3t y =asin^3t then (dy)/(dx)=

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  6. If x = a cos^(3) theta, y = a sin ^(3) theta then sqrt(1+((dy)/(dx))^(...

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  7. If x=a cos ^(3) t,y =a sin ^(3)t,then " at" t = (pi)/(3) ,(dy)/(dx) ...

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  8. If x=asec^3thetaa n dy=atan^3theta,fin d(dy)/(dx)a ttheta=pi/3dot

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  9. If x= sec ^(2) theta, y =tan ^(3) theta ,then " at " theta (pi)/(3) ,...

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  10. If x= 3tan theta ,y =3cosec theta, then " at " theta =(pi)/(6) ,(dy)/...

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  11. If x= 2 cos^(4) (t+3) ,y=3sin ^(4) (t+3) ,then (dy)/(dx)=

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  12. if x=a cos^(4) theta, y= a sin^(4) theta, "then" (dy)/(dx)"at" theta=(...

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  13. If x=sin tcos 2t,y= cos tsin 2t ,then " at " t= (pi)/(4) ,(dy)/(dx)

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  14. Ify=1- cos theta, x =1 - sin theta,then (dy)/(dx) " at " theta = (pi)/...

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  15. If x =theta -sin theta ,y=1 -cos theta ,then " at " theta =(pi)/(2) ,...

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  16. If x=a ( theta -sin theta ) ,y=a(1-cos theta ) ,then (dy)/(dx) =

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  17. If x =a sqrt( sectheta -tan theta) ,y=a sqrt(sectheta +tan theta ), t...

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  18. If x =3 cos t-2cos ^(3) t,y =3 sin t- 2 sin ^(3) t,then (dy)/(dx) =

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  19. If x =3 cos theta -2 cos ^(3) theta, y=3sin theta -2 sin ^(3) theta ,...

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  20. If x= 2cost+cos 2t,y=2sin t-sin 2t ,then " at " t= ( pi)/(4) ,(dy)/(d...

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