Differentiate each of the following w.r.t x:
To find: Value of 
The formula used: (i) 
(ii) 
We have, 
⇒ Putting x = cosθ
θ = cos-1x … (i)
Putting x = cosθ in the equation
⇒ 
⇒ 
⇒ 
Now, we can see that 
= 
⇒ θ = cos-1x
Ans) 
1
Differentiate each of the following w.r.t x:
To find: Value of
The formula used: (i)
(ii)
We have,
⇒ Putting x = cosθ
θ = cos-1x … (i)
Putting x = cosθ in the equation
⇒
⇒
⇒
Now, we can see that =
⇒ θ = cos-1x
Ans)