If x=a(t-sint) and y=a(1-cost), then dy/dx= ?
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dx/dt =a(1-coat)
dy/dt =a(sin t)
==>dy/dx =sin t / (1-cost)
avankh77:
But the options are
a) tan t/2 b) -tan t/2 c) cot t/2 d) -cot t/2
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