Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

if cosxcos(pi/7)+sinxsin(pi/7)=-sqrt2/2 then x can equal?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!