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vagabundo [1.1K]
3 years ago
11

Prove that cos(2????) = 2cos2(????) − 1 for any real number ????.

Mathematics
1 answer:
Over [174]3 years ago
6 0

Answer:

Sure

Step-by-step explanation:

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A hamster runs on a wheel at a rate of 4 miles per hour. What is it's speed in kilometers per second? Round your answer to the n
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Answer:6.437376 Kilometers per Hour

Step-by-step explanation:

6 0
3 years ago
12.
Sveta_85 [38]

Answer:

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7 0
3 years ago
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(8.6x107)-(9.1x10-8)simplify
natima [27]

Answer:

  85,999,999.999 999 909

Step-by-step explanation:

The expression represents the difference of a relatively large number and one that is relatively small. That difference is approximately the value of the large number. The exact value requires 17 digits for its proper expression. Most calculators and spreadsheets cannot display this many digits.

<h3>Standard form</h3>

The numbers in standard form are ...

  86,000,000 = 8.6×10^7

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<h3>Difference</h3>

Their difference is ...

  86,000,000 -0.000000091 = 85,999,999.999 999 909

In scientific notation, this is ...

  8.599 999 999 999 990 9×10^7

4 0
2 years ago
Express a(2) (2a(-1/2)+a) in its simplest form
Soloha48 [4]
First lets simplify the first term and yield (2a)

The second term:
1.   2a * (-1/2) = -a
2.   -a + a = 0

Now we have simplified both terms to: (2a) (0)

Anything multiplied by 0 is 0, so the answer is also 0. 
4 0
4 years ago
Read 2 more answers
Question 20 (5 points)
Sloan [31]

Answer:

Question 20   3 < c < 9

Question 21    2.5

Step-by-step explanation:

hope this helps u

3 0
2 years ago
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