Ask your own question, for FREE!
Mathematics 21 Online
OpenStudy (anonymous):

Find all solutions in the interval [0,2pi) cos^2(x) + 2cos(x) + 1 = 0

OpenStudy (tkhunny):

Have you considered factoring? What if it were: x^2 + 2x + 1 = 0? What would you do?

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!