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Aleksandr [31]
3 years ago
11

hurry please if you answer this question I'll give you the brainliest the question is does the tail rotor help the helicopters t

o stop spinning or does it help it stop flipping over please pick one or both of them hurry hurry hurry hurry hurry hurry hurry hurry hurry hurry please please please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Mathematics
1 answer:
grandymaker [24]3 years ago
7 0

Answer:

It helps it stop spinning if fails then the helicopter can go in an uncontrollable spin.

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Pls help with Trigonometric
Sav [38]

The value of the given trigonometry function is 2√15/15

<h3>Half angles</h3>

Half angles are trigonometric identities used to express sine, cosine and tangent of half angles.

For instance the value of cos theta is expressed as shown below;

cosФ = cos(Ф/2+Ф/2)

cosФ = cos²Ф/2-sin²Ф/2
cosФ = cos²Ф/2-(1-cos²Ф/2)
cosФ  = 1 - 2cos²Ф/2

Given the following parameters

cosФ = -7/15

Substitute

cosФ  = 1 - 2cos²Ф/2

-7/15  = 1 - 2cos²Ф/2

-2cos²Ф/2 = -7/15 - 1

-2cos²Ф/2 = -8/15

cos²Ф/2 = 4/15
cosФ/2 = 2/√15

Rationalize

2/√15 * √15/√15

2√15/15

Hence the value of the given trigonometry function is 2√15/15

Learn more on trigonometry function here: brainly.com/question/2254074

#SPJ1

8 0
1 year ago
A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 15 libraria
kow [346]

Answer:

For the first city, the 95% confidence interval would be:

28,900 +/- 2300 x 3 = 28,900 +/-6900$

For the second city, the 95% confidence interval would be:

30,300 +/- 2100 x 3 = 30,300 +/- 6300$

5 0
3 years ago
A circular plate has circumference of 26.4 inches. What is the area of this​ plate? Use 3.14 for pi.
mafiozo [28]
I believe the answer is 55.49 inches
using the equation C^2/(4*3.14)
3 0
3 years ago
—4 and 4 are ____________ because they have the same absolute value but different signs.
sergij07 [2.7K]
Opposites. Their sum is zero so they are called opposites.
3 0
3 years ago
What should i type it is the top question tho ok ?
taurus [48]

Answer:

first off whats the value of M? second off when you reflect it just flip along either the x or y axis

Step-by-step explanation:

yeet

3 0
3 years ago
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