The answer is y=-2.4+15. (remember the 2.4 is negative)
EQUATION OF A CIRCLE = (x-h)² + (y-k)² =r²
Since the center of the cercle is in O, then h=5 & k=-2
(x-5)² + (y+2² =9
This follows from the half-angle identity for cosine.
It is leaner because the progress of the tree growth is constant. Every year it increases 2 feet staring at 20 feet
Answer: 40°
Step-by-step explanation: gave up on delta math