Ask your own question, for FREE!
Mathematics 16 Online
OpenStudy (anonymous):

any help with this one. find the exact value of the expression cos(-120deg)

OpenStudy (unklerhaukus):

\[\cos(-\theta)=\cos(\theta)\]

OpenStudy (anonymous):

cos(-120)=cos(240) = |dw:1348022270843:dw| \[\sqrt{3}/2\]

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!