Evaluate the following integrals:
Add and subtract a from x in the numerator
∴ The equation becomes
⇒ 
Numerator is of the form cos(A + B)= cosAcosB - sinAsinB
Where A= x - a ; B= a
⇒ 
⇒ 
As 
⇒ xcosa – sina 
+ c
10
Evaluate the following integrals:
Add and subtract a from x in the numerator
∴ The equation becomes
⇒
Numerator is of the form cos(A + B)= cosAcosB - sinAsinB
Where A= x - a ; B= a
⇒
⇒
As
⇒ xcosa – sina + c