If a race car averages 138 miles per hour for 4 hours, how far does the car travel?
2 answers:
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Given:
The minimum and maximum distance that the dog may be from the house can be found by using the equation:
To find:
The minimum and maximum distance that the dog may be from the house.
Solution:
We have,
It can be written as:
Adding 500 on both sides, we get
Now,
and
and
The minimum distance is 492 meters and the maximum distance is 508 meters.
Therefore, the correct option is C.
The unit circle is represented below:
As can be observed in the figure above, for an angle (t), the relation between the trigonometric functions and x and y components is:
x = cos(t)
y = sen(t)
x is positive in the first and in the fourth quadrant. Thus, cos (t) will be positive for angles in the first and fourth quadrant.
y is positive in the first and in the second quadrant. Thus, sin (t) will be positive for angles in the first and second quadrant.
