anonymous
  • anonymous
A highway makes an angle of 6 with the horizontal. This angle is maintained for a horizontal distance of 5 miles. To the nearest hundredth of a mile, how high does the highway rise in this 5-mile section? Show the steps you use to find the distance.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
I got .53 Using sin
anonymous
  • anonymous
|dw:1377069720536:dw|
Psymon
  • Psymon
|dw:1377069733737:dw|

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Psymon
  • Psymon
Not sin :P We need to use a trig function that includes a known quantity as well as the unknown one. Sin is opposite over hypotenuse, but the hypotenuse gives us no information. We use tangent because tangent is opposite over adjacent, which includes our x as well as our known quantity
anonymous
  • anonymous
What???
Directrix
  • Directrix
Sine is opposite over hypotenuse. You have opposite side over adjacent side which is NOT sine.
anonymous
  • anonymous
I thought we would do...|dw:1377069953819:dw|
Psymon
  • Psymon
Interesting, law of sines O.o
Psymon
  • Psymon
Not necessary, though.
anonymous
  • anonymous
I dont know then...:(
Psymon
  • Psymon
Checked it, answer is the same, just.....a much longer way of doing it that isnt needed xD
Directrix
  • Directrix
@OpenSessame Go ahead and do the Law of Sines and see what the answer is.
anonymous
  • anonymous
its .53
Psymon
  • Psymon
Yeah, it's the same answer doing it the faster way with tangent. It's nice to know the law of sines, but you should also know the more efficient way of doing this problem :3
anonymous
  • anonymous
I thought that was more efficient cause i can do it really easy that way...
Psymon
  • Psymon
Well, do whats comfortable of course. But do you understand what I did by chance?
Directrix
  • Directrix
Go with what you know. nearest hundredth of a mile --> .52552... --> .53 as you said @OpenSessame
anonymous
  • anonymous
Yes you used tan and then multiplied.
Psymon
  • Psymon
Mhm. As long as you know what I did, then thats fine. The more you know the better, but use whats comfortable in the end. You got the right answer, so good job!

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