Simple trig question but.. Since I'm homeschooled and in a rut..

[FabZeros]

Eh I got as far as cos^2(x/2)=cosx...

 

[stapel]

Are you supposed to solve the equation in the middle of the graphic you posted? (The stuff around the edges has been cut off.) When you say that you "got as far as", what do you mean? What were the instructions? What were your steps?

Please be complete. Thank you!

 

[FabZeros]

Thank you for your reply! I will be more through next time! I've actually solved it by myself just now haha. Should I delete this thread to keep the forums neat?