anonymous 5 years ago lim A_0 (1-cosA+sinA)/(1-cosA-sinA) if u r familiar and grown more up with limits please help me to get the answer

1. sid1729

As A approaches zero, both the numerator and denominator approach zero individually, so you can apply L'Hopital's rule here.

2. anonymous

can you please explain me the L'Hopital's rule if you are

3. anonymous

Look, you can treat numerator and denominator as two functions: $1 - \cos a + \sin a$ and $1 - \cos a - \sin a$ If you look here: http://en.wikipedia.org/wiki/L'H%C3%B4pital's_rule, you'll discover that we can compute limit by computing derivatives of numerator and denominator first.

4. anonymous

thanks alot