Rebecca Black 0 Posted January 24, 2011 (edited) jk Edited May 7, 2011 by phuqz Share this post Link to post Share on other sites
Doctor Math 0 Posted January 24, 2011 (edited) You sure you copied the left side of the equation correctly? Edited January 24, 2011 by Doctor Math Share this post Link to post Share on other sites
Rebecca Black 0 Posted January 24, 2011 (edited) yep Edited May 7, 2011 by phuqz Share this post Link to post Share on other sites
Sleepy 14 Posted January 24, 2011 Wait... It's just cos? Nothing in parenthesis? No other numbers? Just cos? Are you sure? Share this post Link to post Share on other sites
Fabis 90 Posted January 24, 2011 I don't think you can do anything with a cos without any numbers. Share this post Link to post Share on other sites
Rebecca Black 0 Posted January 25, 2011 ye i just asekd my teacher said its exactly like tht Share this post Link to post Share on other sites
Sleepy 14 Posted January 25, 2011 Well if your teacher is trolling you then just say it's magic and you don't have to explain it. Otherwise it doesn't make sense. Share this post Link to post Share on other sites
Gavin 0 Posted January 25, 2011 I gave it a go. Don't think it's right though since I'm not very good at maths. Share this post Link to post Share on other sites
Sleepy 14 Posted January 25, 2011 Good try Gavin but it doesn't work like that :D Share this post Link to post Share on other sites
20000_Posts 519 Posted January 26, 2011 Well assuming you have your trigonometric identities then... If that was cos(u) then you could put a csc(u) up at the top but even then you could swap stuff out and couldn't do anything with it. Share this post Link to post Share on other sites
Razorlike 1 Posted January 27, 2011 I'm a math student, Cos without anything in parenthesis is like taking the Log of nothing. As for the question, with limited resources. This equation doesn't have a True or False. You have 2 variables (x and y) and one equation, meaning that it could be either for different values of x and y. This equation is true for Sin[(1-1)/2]=Sin[0]=0 and Tan[(x-y)/2] with x=y giving Tan[0]=0 so you have 0 on both sides. ~Razorlike Share this post Link to post Share on other sites
