Higher engineering mathematics

Hi all
I am doing some self study using 'Higher engineering mathematics' fourth edition by John Bird. I have got to the Trig sections and are working on the assignment questions but there are no answers to check against. Is there any website that has the answers?
Thanks in advance for your help.
Anna

Find the name of the publisher of the textbook on the cover or the copyright page. Go to that web site and look for the book using the author's name (John Bird) or the ISBN. If the answers are not there, then you may be out of luck.