Question -
Answer -
Given f (x) = sin x
тЗТ┬а
тЗТ┬аfтАЩ(x)= cos x
Now, as given x тИИ (тАУ╧А/2,╧А/2).
That is 4th┬аquadrant, where
тЗТ┬аCosx> 0
тЗТ┬аfтАЩ(x)> 0
Hence, condition for f(x) to be increasing
Thus f(x) is increasing on interval┬а(тАУ╧А/2, ╧А/2).