Find dy/dx, if y = 12 (1 – cos t), x = 10 (t – sin t), 
To find
we need to find out
and ![]()
So, 
Given, y = 12 (1 – cos t) and x = 10 (t – sin t)
x = 10 (t – sin t)
Differentiating with respect to t.
![]()
⇒ ![]()
y = 12 (1 – cos t)
Differentiating with respect to t.
![]()
⇒ ![]()
∴ 
∴ ![]()