Ineed with number 3 in the picture. not sure how to answer! i hate having to explain how you solve just do! in advance.

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

Evaluate cos2θ for cosθ = square root of 3/2

If sin(x) = 0 and cos(x) = 1, what is tan(x)?