(C) sin(-r) = -a
(D) sin(r) = -a
<u>Explanation:</u>
The unit circle definition allows us to extend the domain of sine and cosine to all real numbers. The process for determining the sine/cosine of any angle θ is as follows:
Starting from (1,0) move along the unit circle in the counterclockwise direction until the angle that is formed between your position, the origin, and the positive x-axis is equal to θ.
- sin θ is equal to the y-coordinate of your point, and
- cosθ is equal to the xxx-coordinate.
In the question, sin(-r) = -a and sin(r) = -a is equal to the x-coordinate, thus they are not correct.
An image is attached for reference.
Answer:
0.36
Step-by-step explanation:
its called a calculator
Answer:
(2⁶)(2⁶)
Step-by-step explanation:
Hope it help
brainliest please
Answer:
A.
Step-by-step explanation:
graph a shows reflection across the y axis
Answer:
2am
Step-by-step explanation:
We know that the temperature variation is depicted by trignometric function. The total cycle of any trignometric function can be divded into four parts. In first quarter of the cycle, the value rises from mean to max. In 2nd quater, it falls to mean again. In third quarter it lowers to minimum and in last quarter rises to mean again.
Dividing the daily temperature variation cycle into four quaters of 6 hours each. The difference in time for any trignometric function to reach from its maximum value to minimum value is one-half of the cycle. In this case, it will be 12 hours.
Therefore daily temperature will fall to its minimum value 12 hours after reaching maximum that is at 2 am