A la regla que asocia a todo elemento de un conjunto con uno y sólo uno de los elementos de otro conjunto se le llama

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?