Hi. I have a few questions I am stuck on.

Evaluate each of the following limits.

1. lim (1-cosx)/ tanx

x-> 0

2. lim sinx/ (x+sinx)

x-> 0

And for the last one, #3, I am wondering If I have the right answer and the back is wrong. Take a look please.

3. lim (sin2x)/(2x^2+x)

x->0

My answer: 1

back of the book: 2

Please let me know. Thank you for your help!