cos(?)=-squareroot2/5, ?/2<?<? whats the sin(2?) and cos(2?)

Asked By eva On 10/03/2017 01:34


I would love to help you on this! However, I'm not sure what the ? mean in this case. Also, are you needing it to be evaluated or just left in terms of sine and cosine? Thank you! Joyce Estes
Answered On 10/06/2017 09:48