If Formulae :• • • • • • • Given,Dividing numerator and denominator by cosx,…………. …………. Differentiating above equation w.r.t. x , …………. …………. …………. Now, …………. = 0Hence Proved.
Formulae :
•
Given,
Dividing numerator and denominator by cosx,
………….
Differentiating above equation w.r.t. x ,
Now,
= 0
Hence Proved.