Evaluate the following integrals:
The denominator is of the form cosC - cosD = 
∴ cos3x - cosx= 
∴ cos3x - cosx= - 2sin2x.sinx
- 2sin2x.sinx = - 2.2.sinx.cosx.sinx
- 2sin2x.sinx= - 4sin2x.cosx
Also sin2x + cos2x = 1
⇒ 
⇒ 
⇒ 
⇒ 
d(cscx) = cscx.cotx
∴ 
∴ 
∵ 
⇒ 
AI is thinking…
Couldn't generate an explanation.
Generated by AI. May contain inaccuracies — always verify with your textbook.
