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andreyandreev [35.5K]
3 years ago
15

Use the unit circle to find the inverse function value in degrees cos^-1 (sqrt3/2)

Mathematics
1 answer:
Marina CMI [18]3 years ago
3 0
Better to write that as:

       -1
cos      [ sqrt(3) / 2 ]

since the cosine is defined as "adjacent side over hypotenuse,"  we know that the adj. side is sqrt(3) and that the hyp is 2.    The primary solution will be in Quadrant I because the adj. side is positive.

Think:  which angle in Q I has adj. side equal to sqrt(3) and hyp equal to 2?

That'd be 30 degrees.  Unfortunately, that's not one of your answer choices.  Thus, reflect that angle in the positive x-axis; you'll end up with a ray whose positive angle is 330 degrees. 

I'd suggest you ensure that you've copied this problem down correctly.
                                                                 sqrt(3)
Did you mean sqrt(3/2) or did you mean ----------  ?? 
                                                                     2
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a cell phone company charged 49.95 per month plus 0.05 per call minute i used 200 call minutes last month proportional or not pr
ehidna [41]

Answer:

Not sure what you are asking here but the answer is $59.95

Step-by-step explanation:

$49.95 + (10 * 0.05)

6 0
3 years ago
Following are the number of grams of carbohydrates in a sample of 12-ounce espresso beverages offered at Starbucks. 6 , 9, 10, 2
marusya05 [52]

Answer:

x=6, 9, 10, 20, 22, 25, 27, 40 , 48, 59

i= 1,  2 , 3,  4,    5,   6,    7,   8,    9,    10

And as we can see here the position for x=40 is 8, so then we can calculate the percentile for 40 grams like this:

p=\frac{8}{10} *100 = 80

So the  the vale of 40 gr correspond to the 80th percentile of the data since accumulates 80% of the values below.

Step-by-step explanation:

We can define a percentile as "a value on a scale of 100 that indicates the percent of a distribution that is equal to or below it"

For this case we have the following data given:

6 , 9, 10, 20, 22, 25, 27, 40 , 48, 59

And we want to calculate the percentile for the value of 40 grams

Since the dataset is on increasing way there is no problem to calculate this percentile.

We see that we have a total of n =10 observations, and we can rank the position of each observation (i) like this:

x=6, 9, 10, 20, 22, 25, 27, 40 , 48, 59

i= 1,  2 , 3,  4,    5,   6,    7,   8,    9,    10

And as we can see here the position for x=40 is 8, so then we can calculate the percentile for 40 grams like this:

p=\frac{8}{10} *100 = 80

So the  the vale of 40 gr correspond to the 80th percentile of the data since accumulates 80% of the values below.

3 0
3 years ago
DONT ANSWER IF YOU SEND LINKS OR NOT CORRECT ANSWERS
marta [7]
What form of math is this?
4 0
3 years ago
What is angle A equal? <br><br> Thanks :)
Alex Ar [27]
Angle A and angle B sums up to 180 (interior angles)

6x - 35 + 3x + 53 = 180
9x + 18 = 180
9x = 162
x = 18

angle A = 6(18)-35 = 73 degrees
7 0
2 years ago
Read 2 more answers
What is the square root of 36?
Ket [755]
6 is the answer noob
5 0
3 years ago
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