2) If cot -3/7 and sin < 0, find cos

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

With both problems. a. s.a. p directions on photo ^