anonymous
  • anonymous
The picture below shows a portion of a river dam: Which of the following can be used to calculate the height of the river dam? 115 divided by cos 50 degrees 115 cos 50° 115 tan 50° 115 divided by sin 50 degrees
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
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anonymous
  • anonymous
@Hero @peachpi @dan815 @Nnesha @nincompoop @Albany_Goon @Awolflover1 @badmood @robtobey
kropot72
  • kropot72
Do you know the definitions of the Trig functions for a Right Triangle?

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anonymous
  • anonymous
No :(
kropot72
  • kropot72
You can find them here: http://www.regentsprep.org/regents/math/algtrig/att1/trigsix.htm
anonymous
  • anonymous
NONO
anonymous
  • anonymous
I just need help working out the question.
mathstudent55
  • mathstudent55
|dw:1439169760946:dw|
mathstudent55
  • mathstudent55
Look in the triangle I drew above. Now look at your problem Which pieces of info do you know and what are you looking for?
anonymous
  • anonymous
The opposite is what I am looking for.
mathstudent55
  • mathstudent55
|dw:1439169845899:dw|
mathstudent55
  • mathstudent55
Correct.
anonymous
  • anonymous
dayyyum girl u smart
anonymous
  • anonymous
Okay so how do I find it?
mathstudent55
  • mathstudent55
|dw:1439169912884:dw|
mathstudent55
  • mathstudent55
You want the opposite. You have the angle and the adjacent. Which trig function, sine, cosine, or tangent, relate the angle measure to the opposite and the adjacent?
anonymous
  • anonymous
Opposite is cosine
anonymous
  • anonymous
Adjacent is Sine
mathstudent55
  • mathstudent55
No. Look in my drawing above. First, the cosine does not have the opposite at all. In addition, you need one ratio that has both adjacent and opposite since we don't know anything about the hypotenuse.
anonymous
  • anonymous
Oh im sorry it is tan because of opp/adj
mathstudent55
  • mathstudent55
|dw:1439170136519:dw|
mathstudent55
  • mathstudent55
Exaclty.
mathstudent55
  • mathstudent55
|dw:1439170223910:dw|
mathstudent55
  • mathstudent55
Now you can rewrite the left side as a fraction over 1 and solve it like a proportion by cross multiplying.
mathstudent55
  • mathstudent55
|dw:1439170321855:dw|
mathstudent55
  • mathstudent55
Do you understand it?
anonymous
  • anonymous
Yes I think so. So that means it would be C?
mathstudent55
  • mathstudent55
Correct.
anonymous
  • anonymous
Thank you for helping me @mathstudent55
mathstudent55
  • mathstudent55
You're welcome.

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