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Dennis_Churaev [7]
4 years ago
15

What is a possible value of sin θ when cos2θ = 0.73?

Mathematics
2 answers:
pav-90 [236]4 years ago
8 0
<span><span><span><span><span>(−<span>18</span>)</span>2</span>+<span>cos2</span>θ</span><span><span>cos2</span>θ</span><span><span>cos2</span>θ</span><span>cosθ</span><span>cosθ</span></span><span><span>=1</span><span>=1−<span>164</span></span><span>=<span>6364</span></span><span>=±<span><span>3<span>7‾√</span></span>8</span></span><span>=−<span><span>3<span>7‾√</span></span>8</span></span></span></span>

<span>secθ=−<span>8<span>3<span>7‾√</span></span></span>=−<span><span>8<span>7‾√</span></span>21</span>,tanθ=<span>1<span>3<span>7‾√</span></span></span>=<span><span>7‾√</span>21</span>,</span> and <span>cotθ=3<span>7‾<span>√</span></span></span>


olasank [31]4 years ago
6 0
A possible value of sin would be 0.73
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Answer:

17ft wide

Step-by-step explanation:

The room is 9 by 19ft

Length (x) = 19ft

Width(y) = 9ft

Area of the rug = 119ft^2

x*y = 119 ...........(1)

For the second equation we will make sure the strip around the room is uniform in size

9 - x = 19 - y

-x = 19 - 9 -y

-x = 10 - y

x = y - 10 ..........(2)

Put the value x in equation 1

(y - 10)y = 119

y^2 - 10y = 119

y^2 - 10y - 119 = 0

a = 1, b = -10, c= -119

Use quadratic formula to solve the equation

y = (-b +/-√b^2 -4ac) / 2a

y = [-(-10) +/- √ (-10)^2 - 4(1)(-119)] /2(1)

y = (10 +/- √100 + 476) /2

y = (10+/-√ 576 ) / 2

y = (10 +/- 24) / 2

y = (10 + 24) /2 or (10 - 24)/2

y = 34/2 or -14/2

y = 17 or -7

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Recall that x = y - 10

x = 17 - 10

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5 0
3 years ago
What is mean, median, mode,and range.
Alex17521 [72]
Mean is the same as the average
median is the middle number
mode is the number that is used most often
range is the highest number minus the lowest number

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the median would be the middle number, and that would be 3

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svp [43]
-5.8 - (-8.4)

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So we take that -1 and multiply it by that -8.4. Multiplying 1 against anything leaves it the same, so we just need to change the sign. Two negatives make a positive. 

-5.8 + 8.4

Now we add these together.

This gives us our final answer of 2.6
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Answer:

I believe its

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Answer:

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