Could anyone help on this trig identity? I have a quiz tomorrow and am unsure on this one. 2 cos squared x- 5 cosx+ 2= 0 Any help is appreciated!
Last edited by mr fantastic; February 16th 2011 at 06:38 PM. Reason: Re-titled.
Follow Math Help Forum on Facebook and Google+
Do you mean solve this equation for ? If so make and solve the quadratic
Originally Posted by powerduffgirL Could anyone help on this trig identity? I have a quiz tomorrow and am unsure on this one. 2 cos squared x- 5 cosx+ 2= 0 ... recommend you find out the difference between identities and conditional equations.
View Tag Cloud