Find the reference angle for 12pi/5
1 answer:
Answer:
72°
Step-by-step explanation:
To convert from degrees to radians, multiply the degrees by .
To convert from radians to degrees, multiply the radians by .
Right now you're in radians, so multiply it by .
=
°.
Now we need to find the reference angle for 432°.
If you draw 432° starting from the right and going clockwise (because it is a positive angle, if it was negative you would go counterclockwise), it will make one full rotation, which is 360°, and you will end up in the 1st quadrant, 72° past 360°.
Depending on the quadrant you land in, there might be different operations to perform. Please check the attached image.
In this case, we're in the 1st quadrant so we can leave the angle as is.
The answer is 72°.
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Answer:
Step-by-step explanation:
The area of an equilateral triangle with side length is equal to
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units.
Substituting in this value, we get:
First you have to figure out the length of the track:
r is the half of the diameter:
200ft : 2 = 100ft
= 200
≈ 628,31
The athlete has to run ca. 5280ft for one mile:
5280 : 628,31≈8,4
The athlete has to run 8,4 laps
r is the half of the diameter:
200ft : 2 = 100ft
The athlete has to run ca. 5280ft for one mile:
5280 : 628,31≈8,4
The athlete has to run 8,4 laps