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gregori [183]
3 years ago
11

Which function is equivalent to y= -cot(x)?

Mathematics
2 answers:
erastova [34]3 years ago
7 0
We know that
tan (A+B)=sin (A+B)/cos (A+B)
sin (A+B)=sin A*cos B+sin B*cos A
cos (A+B)=cos A*cos B-sin A*sin B
so
for (x+pi/2)
A=x
B=pi/2
sin A=sin x
sin B=1
cos A=cos x
cos B=0
sin (A+B)=sin x*0+1*cos x------> cos x
cos (A+B)=cos x*0-sin x*1------> -sin x
tan (x+pi/2)=cos x/(-sin x)------> -cot x

the answer is the option
D. y= tan (x+pi/2)
vitfil [10]3 years ago
7 0

Answer:

D. y = tan(x + pi/2)

Step-by-step explanation:

this is the correct answer on ed-genuity, hope this helps! :)

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What is the Median? Data set A) 12, 14, 16, 23, 31, 45
zhannawk [14.2K]
The median is 19.5. 16+23 is 39. 39/2 is 19.5
8 0
3 years ago
Read 2 more answers
Line (5,-4), slope -4 <br><br> Y-intercept =
user100 [1]

Answer:-2.75

Step-by-step explanation: y+4=-4(x-5) y+4=-4x+5/4 y=-4x-2.75

4 0
3 years ago
I think it’s A but again i’m not sure.
Gnoma [55]
M∠BDC=half the arc it faces=1/2 of 54=27
BD is the diameter, so m∠C=90
m∠DBC=180-90-27=63
6 0
3 years ago
I need help it’s super confusing
steposvetlana [31]

Answer:

Range = 58

Mean = 25.81

Median = 17

Mode = 2, 9, 11, 12, 16, 17, 18, 41, 48, 50, 60

Upper Quartile = 11

Lower Quartile = 48

Step-by-step explanation:

Start by putting all of the values in order from least to greatest.

16, 18, 12, 9, 17, 2, 41, 48, 50, 60, 11

becomes

2, 9, 11, 12, 16, 17, 18, 41, 48, 50, 60

Range

The range is the difference between the highest and lowest value. So in this case, it's 58, because 60 - 2 = 58

Mean

The mean is another word for the average. To calculate the average, add all of the values and divide the sum by the number of values.

2 + 9 + 11 + 12 + 16 + 17 + 18 + 41 + 48 + 50 + 60 = 284

There are 11 values, so divide the sum (284) by 11:

284 / 11 = 25.8181818.

That rounds to 25.81

Median

The median is the middle value of the data set.

In 2, 9, 11, 12, 16, 17, 18, 41, 48, 50, 60 the middle value is 17. It has 5 values on each side of it.

Mode

The mode is the number that appears the most in the data set. Each value only appears once, so the mode is the entire list of numbers. 2, 9, 11, 12, 16, 17, 18, 41, 48, 50, 60

Upper Quartile

The upper quartile of a data set is the median of the numbers that are to the left of the median for the entire data set. The median is 17, so the numbers to the left are 2, 9, 11, 12, and 16. The median of those is 11 because it is in the middle. So the upper quartile is 11.

Lower Quartile

The lower quartile is found the same way the upper quartile is, but it's the median of the numbers to the <em>right</em>. The numbers to the right of 17 are

18, 41, 48, 50, and 60. The median of those is 48 because it's in the middle. So the lower quartile is 48.

5 0
3 years ago
The product of two factors is 7,200.if one of the factors is 90,what is the other factor?
Eddi Din [679]

Ok. Something times 90 = 7200.


Let something = x


90x = 7200


Divide both sides by 90.


90x/90 = 7200/90


x = 80


The other factor is 80.


5 0
3 years ago
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