How do I find the limit as x approaches negative infinity of cosx? Precalculus Limits Limits Involving Infinity 1 Answer Wataru Dec 12, 2014 Since cos x does not approach any particular number as x approaches -infty, lim_{x to -infty}cos x does not exist. I hope that this was helpful. Answer link Related questions How do I find the limit as x approaches infinity of (1.001)^x? How do I find the limit as x approaches infinity of x^7/(7x)? How do I find the limit as x approaches infinity of xsin(1/x)? How do I find the limit as x approaches infinity of the square root function? How do I find the limit as x approaches infinity of tanx? What is the limit as x approaches infinity of (x^2-4)/(2x-4x^2)? What is the limit as x approaches infinity of 1/x? What is the limit as x approaches infinity of x? What is the limit as x approaches infinity of cosx? What is the limit as x approaches infinity of lnx? See all questions in Limits Involving Infinity Impact of this question 6756 views around the world You can reuse this answer Creative Commons License