Q. 223.8( 69 Votes )
Evaluate the following limits in Exercises.
Answer :
⇒ 
Let x – (π/2) = y
So, x→ (π/2) = y→ 0
Now, 
=
=
We know that tan x = sin x/ cos x
=
Multiply and divide by 2,
=
=
=
=
=2
Ans. 
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