Which of the following is a sinusoid? O A. x2 + y2 = 1
O B.
B.
x y²
- = 1
3 6
O C. y = x
O D. y = cos(x) - 2

Just tell me how to set up the equation.

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

The radius of the circle below intersects the unit circle at (3/5,4/5). what is the approximate value of theta? 0.6 radians 1.0 radians 36.9 degrees 53.1 degrees