Answer:
The correct answer is 9 inches : )
Step-by-step explanation:
I took the test and got it right
Answer:
D
Step-by-step explanation:
We are given an equation:
This is an equation of a circle. General form of a circle equation is:
Where:
a = x coordinate of a center
b = y coordinate of a center
r = radius of a circle
Motion detector can detect person anywhere within a boundary. The greatest distance at which detector can detect is at the edge of a circle. That distance, between detector and edge of circle, is equal to radius.
From the equation we have:
The greatest distance at which person can be detected is 4ft.
For Question 1:
angle CAB, angle ABC, angle BCA
Question 2: angle BCD