HSC Arts 12th Board ExamMaharashtra State Board
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If y =1-cosθ , x = 1-sinθ , then dy/dx at 0 =π/4  is - HSC Arts 12th Board Exam - Mathematics and Statistics

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Question

If y =1-cosθ , x = 1-sinθ , then ` dy/dx at " "0 =pi/4`  is ............

Solution

Ans. (A)

`dy/dx=sintheta`

`(dx)/(d theta)=-cos theta`

`dy/dx=((dy)/(d theta))/((dx)/(d theta))=-sintheta/costheta=-tan theta`

`therefore dy/dx=-1`

  Is there an error in this question or solution?

APPEARS IN

 2013-2014 (March) (with solutions)
Question 4.1.1 | 2.00 marks
Solution If y =1-cosθ , x = 1-sinθ , then dy/dx at 0 =π/4  is Concept: Derivatives of Functions in Parametric Forms.
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