Answer:
How u can tell that it is true by AD AND CD THERE POINTING THE SAME WAY SOOOO AND SORRY FOR THE CAPS
Step-by-step explanation:
F(x)=1/3-1/21x
0=1/3-1/21x multiply both side by 21
0=7-x
X=7
Let's divide in order to simplify
We are left with 3/4. that's your simplified fraction.
Answer: (8,90°)
To get this answer, you multiply the r values together to get 2*4 = 8. At the same time, you add the theta angles to get 45° + 45° = 90°
The general rule is that if A = (r,theta) and B = (s,phi) then
A*B = (r*s,theta+phi)
where the point (s,phi) is a polar form point.