Answer:
48
Step-by-step explanation:
25% of x = 0.25
12/0.25 = 48
<h3>
Answer: B) 60</h3>
================================================
Explanation:
Whenever the angle theta is between 0 and 90, the reference angle is exactly that value.
It's only when you get to other quadrants is when things get a bit tricky. Right now we're in quadrant 1, often written as Q1.
-------------------
Extra info:
- If theta is between 90 and 180, then the reference angle is 180-theta. This region is Q2
- If theta is in quadrant 3, between 180 and 270, then the reference angle is theta-180. The order of subtraction is important since x-y is the not the same as y-x.
- Lastly, if theta is between 270 and 360 (in Q4), then the reference angle is 360-theta.
- As you can see, we have four quadrants starting with Q1 in the upper right corner. Then we move counterclockwise to get Q2,Q3 and Q4.
Answer:
f(- 2) = 16
Step-by-step explanation:
Substitute x = - 2 into f(x), that is
f(- 2) = 5(- 2)² - 4 = 5(4) - 4 = 20 - 4 = 16
Answer:
3π
Step-by-step explanation:
period = 3π
