anonymous
  • anonymous
HELP!!!!! Solve for x. Round your answer to 2 decimal places. A right triangle is shown where the angle between the hypotenuse, of length x units, and a leg, of length eighteen units, is 50 degrees Find sinB and TanB
Mathematics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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anonymous
  • anonymous
that is what the triangle looks like
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anonymous
  • anonymous
you need to use the Pythagorean theory but in order to you need to know the other leg. to find the other leg you need to multiply 18 by the sqrt of 2 which equals 18sqrt2. now use the Pythagorean theorem

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zepdrix
  • zepdrix
wow thats a lot of tags +_+
zepdrix
  • zepdrix
|dw:1432785372438:dw|
anonymous
  • anonymous
is that an angle of 50?
zepdrix
  • zepdrix
So we'll need to use one of our trig relations. Which one? :)
anonymous
  • anonymous
a^2+b^2=c^ 18sqrt2^2+18^2=x^ 36+324=x^2 360=x^2 square root 360 to find x.
anonymous
  • anonymous
x= 6sqrt10 but they want decimals so it is 18.97=x
anonymous
  • anonymous
simple trig would work i think. And you cant assume it is a 90 degree angle
anonymous
  • anonymous
@timo86m it says it's a right triangle though ...
anonymous
  • anonymous
oh nevermind its given that it is 90
anonymous
  • anonymous
sorry y'all, I just needed help!
anonymous
  • anonymous
you have to find sinB and TanB
anonymous
  • anonymous
90 is your answer. It may also be 96

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