verify the identify:
http://img340.imageshack.us/img340/2779/xxaa5.jpg
since cos2u=cos^2-sin^2
would the same be applied to cos3u..as in = cos^3-sin^3, or am i wrong
Printable View
verify the identify:
http://img340.imageshack.us/img340/2779/xxaa5.jpg
since cos2u=cos^2-sin^2
would the same be applied to cos3u..as in = cos^3-sin^3, or am i wrong
Quote:
Originally Posted by algebra2
Soooo....
and you can take it from here.
-Dan