ok the book quotes sin and cos of 45 degress as 1/sqrt 2, but my calculator give the answer of 2/sqrt 2

I`m convinced the book is wrong , or am I nuts?

Results 1 to 4 of 4

- Apr 13th 2012, 08:34 AM #1

- Joined
- Nov 2011
- From
- Chelmsford, Essex, UK
- Posts
- 67

- Apr 13th 2012, 08:45 AM #2

- Apr 13th 2012, 11:19 AM #3

- Joined
- Nov 2011
- From
- Chelmsford, Essex, UK
- Posts
- 67

- Apr 14th 2012, 01:39 PM #4

- Joined
- Apr 2005
- Posts
- 19,344
- Thanks
- 2860