यदि `y=12(1-cost), x=10(t-sint), -(pi)/(2)lt t lt (pi)/(2)` तो `(dy)/(dx)` ज्ञात कीजिए ।

यदि `y=12(1-cost), x=10(t-sint), -(pi)/(2)lt t lt (pi)/(2)` त�

1.	यदि `y=12(1-cost), x=10(t-sint), -(pi)/(2)lt t lt (pi)/(2)` तो `(dy)/(dx)` ज्ञात कीजिए ।
Answer» `y=12(1-cost)` `rArr" "(dy)/(dx)=12 sint` `x=10(t-sint)` `rArr" "(dx)/(dt)=10(1-cost)` `therefore" "(dy)/(dx)=(dy//dt)/(dx//dt)=(12 sint)/(10(1-cost))` `=(6)/(5).(2sin.(t)/(2)cos.(t)/(2))/(2sin^(2).(t)/(2))=(6)/(5)cot.(t)/(2)`