Home
Class 12
MATHS
If x = 2 cos t - cos 2 t and y =2 sin t ...

If `x = 2 cos t - cos 2 t and y =2 sin t - sin 2t,` then `(dy)/(dx) at t = (pi)/(2)` is

A

`-1`

B

0

C

`1//2`

D

1

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

If x= a(cos t +t sin t) and y=a(sin t - t cos t), find (d^2y)/(dx^2)

If x=a(cos t+t sin t) and y=a(sin t-t cos t) , find (d^2y)/(dx^2)

If x = sin t and y = tan t , then (dy)/(dx) is equal to a) cos ^(2) t b) (1)/( cos ^(3) t ) c) (1)/( cos ^(2) t ) d) sin ^(2) t

If x = ( 3t)/( 1 + t ^(3)) and y = ( 3 t ^(2))/( 1 +t ^(3)), then (dy)/(dx) at t =1 equals

If x= A cos 4t + B sin 4t , then (d^(2)x)/(dt^(2))=

If x = sin^(-1) (3t - 4t^(3)) and y = cos^(-1) (sqrt(1 - t^(2))) , then (dy)/(dx) is equal to a) (1)/(2) b) (2)/(3) c) (1)/(3) d) (2)/(5)