anonymous
  • anonymous
Help me start this out please. I need to find the measure of x. Will medal as I always do :)
Geometry
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
it is a right triangle, such as this one. On side B is 12. On side C is 12. X is between the two.
anonymous
  • anonymous
On side c is 13 My bad
anonymous
  • anonymous
@Luigi0210 May you be able to help me? :)

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Luigi0210
  • Luigi0210
So it's this? |dw:1433441809145:dw|
anonymous
  • anonymous
Yes!! Without the a
Luigi0210
  • Luigi0210
Okayyyy, if you know your triangles, you should know that 5-12-13 is a special triangle like 3-4-5. So we can just replace a with 5. In order to find x, we could do either the sine, cosine, or tangent, your choice since we have all the sides.
anonymous
  • anonymous
Im going to go with tan
Luigi0210
  • Luigi0210
Alright! So tangent is: \(\large \tan\theta=\frac{opposite}{adjacent} \) So for your triangle: |dw:1433442229985:dw| So \(\large \tan x=\frac{5}{12} \) Make sense?
Luigi0210
  • Luigi0210
In order to get the angle for x, just take the inverse tangent: \(\large x=\tan^{-1}(5/12)\) Plug that into a calculator and you'll get the angle degree of x :)
anonymous
  • anonymous
im sorry i didnt respond fast enough but thank you for helping me!
anonymous
  • anonymous
22.61 or rounded 22.62 Thank you <3 I got the answer :D
Luigi0210
  • Luigi0210
It's alright, and yes, nice job :) You're welcome!

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