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enyata [817]
3 years ago
11

Which expression is equivalent to cos(4a)?

Mathematics
1 answer:
vova2212 [387]3 years ago
7 0
1-8sin^2 Acos^2A or 1-8sin^2A
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Please answer this question now
Luda [366]

Answer:

3

Step-by-step explanation:

You know that angle Y is a right angle because XY is the radius and YZ is a tangent to the circle. So, you can use the pythagorean theorem to find the third side:

XY^2+4^2=5^2

XY^2+16=25

XY^2=9

XY=3

Hope this was helpful! :)

4 0
3 years ago
Heeeeeeeeeeeelllllllllllllpppppppp
bazaltina [42]

19 is the median of the numbers

7 0
3 years ago
Can someone PLEASE explain to me how to find the rule of a function table. I understand how find the rule of easy function table
goldfiish [28.3K]

Answer:

y=2x-46

Step-by-step explanation:

Select any two coordinate points. I'm picking (1,-44) and (2, -42).

x1 and y1 are the first coordinates. x2 and y2 are the second coordinates. The formula for finding the slope of a linear fuction is (y2-y1)/(x2-x1). Substiute the numbers into this formula:

-42-(-44)/2-1

=-42+44/1

=2

This is the slope. In y=mx+b, plug in your newly found slope. Next, to find the y-intercept, plug any pair of coordinate points into your incomplete formula y=2x+b. I'm going to use (1,-44) again.

-44=2(1)+b

-44=2+b

b=-46

Now, plug this into your formula, and you'll get y=2x-46.

4 0
3 years ago
Read 2 more answers
If I work three hours of day and make $7.25 an hour how much do I make a year
yarga [219]
First of all we are going to take $7.25 and multiply it by 3 here is the math
7.25 x 3 = 21.75
so this means he makes 21.75 dollars a day.
since there are 365 days a year. Now i'm not saying he worked every single day but the question does not say other wise
so we would take 21.75 and multiply it by 365 heres the math
21.75 x 365 = 7,938.75 
this means he makes 7,938.75 dollars a year!!
your welcome 

merry christmas
4 0
3 years ago
The polygon circumstances the circle. Which of the following is the perimeter of the polygon ?
alex41 [277]

Answer:

How are we suppose to answer it if it doesnt have any detail or a picture?

3 0
3 years ago
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