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Molodets [167]
3 years ago
13

What is the exact value of cos 2π/3.

Mathematics
2 answers:
lora16 [44]3 years ago
4 0
The problem ask to calculate the exact value of the expression or trigonometric expression that is stated in you problem. Base on following some theories and rules about solving trigonometric expressions, the value of cos 2pi over 3 would be -1/2. I hope you are satisfied with my answer and feel free to ask for more 
nignag [31]3 years ago
3 0
Cos 2(phi)/3= cos 120°= -cos 60°= -1/2
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lubasha [3.4K]

Answer

The answer and procedures of the exercise are attached in the following archives.

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4 years ago
For the annual rate of change of +70%, find the corresponding growth or Decay Factor.
omeli [17]
Hello there!
1. Okay. So 70% is positive, so it is a corresponding growth. 70% is 0.7 in decimal form. C and D are both eliminated, because that's too large. When something grows by 70%, that is less than double. 0.7 is not right either, because that's more of a decay than a growth. The only answer that makes sense id 1.70, because you are going up, and adding 1 to decimal form brings you to the decimal that when multiplied will bring you to the total. The answer is B: 1.70.

2. So, -75% is negative, so it is a decay factor. A is eliminated, because it makes no sense and B is out, because that represents growth, not decay. You lose 75% of the amount overtime compounded, but you still have 25% that remains. To find that amount, you would subtract that amount from 1 to get the decay. 1 - 0.75 is 0.25. The decay factor is 0.25. The answer is D: 0.25.
4 0
3 years ago
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True [87]

Answer:

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or

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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Answer:

30 meters per second

Step-by-step explanation:

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4 0
4 years ago
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3 years ago
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