For a given angle θ, sin θ = 1. what is cos θ?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.