Answer:
cos(θ) > 0
Step-by-step explanation:
In Quadrant IV, the cosine is positive.
__
In the attached, trig functions not listed are negative.
Is a D a failing grade?
1 answer:
You might be interested in
To understand the function better, let's convert it from polar coordinates to cartesian coordinates. The relation between those coordinates are
Our function is
If we multiply both sides by r, we have
The square of the radius is equal to the sum of the squares of the cartesian coordinates
Using this identity, we can rewrite our function as
Completing the square, we can rewrite our function as
This is a equation of a circle.