Sum
If y =1 - cos θ , x = 1 - sin θ , then ` dy/dx at " "θ =pi/4` is ________
Advertisement Remove all ads
Solution
`dy/dx=sintheta`
`(dx)/(d theta)=-cos theta`
`dy/dx=((dy)/(d theta))/((dx)/(d theta))=-sintheta/costheta=-tan theta`
`dy/dx = - tan (pi/4)`
`therefore dy/dx=-1`
Concept: Derivatives of Functions in Parametric Forms
Is there an error in this question or solution?
APPEARS IN
Advertisement Remove all ads
