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plzz help me now.......
if cosy=xcos(a+y) theprove that
dy/dx=(cos^2 (a+y))/sina
 2 years ago
 2 years ago
plzz help me now....... if cosy=xcos(a+y) theprove that dy/dx=(cos^2 (a+y))/sina
 2 years ago
 2 years ago

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shivamsinhaBest ResponseYou've already chosen the best response.0
i jst dbtknw ...y i g8 stuck wit simple sums....:(
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.1
using implicit differentiation: \[\frac{dy}{dx} = \frac{\cos(a+y)}{x \sin(a+y)\sin(y)}\]
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.1
then im guessing use sum of angles formula
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.1
sin(a+y) = sin(a)cos(y) + sin(y)cos(a)
 2 years ago

shivamsinhaBest ResponseYou've already chosen the best response.0
\[shouldnt ittt be \sin(y) dy/dx =\sin(a+y)x+coas(a+y)\]
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.1
i don't know if im helping : there should be a dy/dx with the sin(a+y)x term
 2 years ago

shivamsinhaBest ResponseYou've already chosen the best response.0
ywesssss it shud b sry it din write
 2 years ago

shivamsinhaBest ResponseYou've already chosen the best response.0
pellet....yes u r write....mdumb :P
 2 years ago

shivamsinhaBest ResponseYou've already chosen the best response.0
censorship even here??? :P
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.1
haha from here though im not sure where to go, they don;t have an x in their answer ...i don't see how the x cancels anywhere
 2 years ago
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