Wednesday

November 25, 2015
Posted by **sh** on Friday, April 9, 2010 at 4:59am.

lim x->(pi/2) [((pi/2)-(x))/cosx]

May I please get a hint on how to start this question?

- Calculus -
**Damon**, Friday, April 9, 2010 at 4:32pmhint:

cos x = sin (pi/2-x)