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GrogVix [38]
3 years ago
7

What is the exact value for cos(-2

n="absmiddle" class="latex-formula">/3)?
This should be done without a calculator.
Please explain the process if possible.

Mathematics
1 answer:
RSB [31]3 years ago
5 0
Notice the picture below

see where that angle is?

check your Unit Circle for that value

also notice, that fractions of \pi are just like grabbing 180 degrees and splitting it, so one third of 180 or \pi is 180/3 or 60 degrees

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The earth orbits the sun, similar to how the moon orbits the earth. Is the earth the only planet to orbit the sun?
Slav-nsk [51]
No it is not. There are 8 known planets in our solar system and all of them orbit the sun. There are also many dwarf planets.
3 0
3 years ago
Read 2 more answers
How much is the interest on my loan?
kirill [66]

Answer:  The interest is:  " $ 64 .00 " .

_____________

Step-by-step explanation:

_____________

Take note of the formula:

" Ⅰ = Prt " ;

→ that is:

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→   " Ⅰ = P * r * t " ;

_____________

In which:  

_____________

 " Ⅰ = the interest " ;

 " P = the Principal amount of money " ;

 " r = rate " (expressed as the "decimal form" of the percentage) ;

 " t = time " (in years) ;

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We are given:  

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 P = $400 ;

 r = 0.08 ;  

{<u>Note of interest</u>:  That is " 8% " ; since "8 % "  = "(8/100)" ;

                                                                          = "(8 ÷ 100)"

                                                                          = " 0.08 ".}.

 t = 2 ; {that would represent:  " 2 (two) years".}.

_____________

We are to solve for "Ⅰ" ; the amount of "Ⅰnterest" :

→ To solve for "Ⅰ " ; we plug in our given values; and calculate:

_____________

  →  Ⅰ = P * r * t ;

        = 400 * 0.08 * 2 ;

        = 64 .

_____________

  →  Ⅰ = $ 64.00 .

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Hope this is helpful to you!

Best wishes!

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4 0
3 years ago
If a dilation is applied to a triangle, then the image must be
Flura [38]

Answer: it would be a congruent triangle

Step-by-step explanation:

i have no idea but i got it right :)

6 0
3 years ago
Which ratio would help find the distance the person is from the flag pole ¨X¨ if the angle is elevation of 30 degrees.
WINSTONCH [101]

Answer:

There are three major trignometric ratios in mathematics and they are:

sine(sin), cosine(cos) and tangent(tan). A popular acronym is used in recalling the formula for each ratio and it is: SOH-CAH-TOA.

Sine(x) = Opp/Hyp

Cosine(x) = Adj/Hyp

Tangent(x) = Opp/Adj

Now, the Hyp is the hypothenus of the triangle and it is the side opposite to angle 90. The opposite and adjacent is kind of relative depending on the angle been considered. For this case, we are considering angle 30 which the opposite side is 60 and the remaining side becomes the adjacent

Step-by-step explanation:

tan 30 = 60/x

5 0
3 years ago
Pleaseee help meeeeeeeeeeee
grandymaker [24]
48,x and x all lie on a straight line sooo 180-48=2x
132=2x
132/2=x
66=x
X=66
4 0
3 years ago
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