Question

cos squared x + 2cosx + 1 = 0

Answer 1

cos^2 x + cos x + cos x +1 = 0
cos x (cosx +1) + 1 (cos x +1)= 0
(cos x+1)(cos x +1 ) = 0

Answer 2

i think you do it now

Answer 3

thank you

Answer 4

i have another

Answer 5

what is your answer

Answer 6

\[\cos ^{2}x = 3\] is that correct?

Answer 7

cos x + 1=0
cos x = -1
cos x = cos 2 Pi

Answer 8

oh ok tnx!

Answer 9

welcome

Answer 10

@WATTAGWAN are ypu still answering? .. tnx

Answer 11

i dont think so

Answer 12

ok