Mark (√) against the correct answer in the following:
Find the equivalent expression to |cos x| at 0
x
In 
=cos x
In 
=-cos x
⇒1-0-(-1) +0=2
1
Mark (√) against the correct answer in the following:
Find the equivalent expression to |cos x| at 0x
In
=cos x
In
=-cos x
⇒1-0-(-1) +0=2