NEET Class neet Answered
If x=2(¢ + sin¢) and y= 2(1- cos¢) then value of dy/dx will be
Asked by namratas1 | 04 Aug, 2019, 01:04: PM
Expert Answer
y = 2(1 - cosθ ) ; dy/dθ = 2 sinθ ......................... (1)
x = 2(θ + sinθ) ; dx/dθ = 2+2cosθ .......................... (2)
dy/dx = sinθ / ( 1+cosθ ) = [ 2 sin(θ/2) cos(θ/2) ] / [ 2 cos2 (θ/2) ] = tan(θ/2) ................ (3)
Answered by Thiyagarajan K | 04 Aug, 2019, 01:36: PM
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