Find the cosine of ∠I. Write your answer in simplified, rationalized form. Do not round.
cos (I) =

Darian wants to build a regulation size pool table that is 9 feet in length. he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).