anonymous
  • anonymous
how do i find the value of x in this equation?
Mathematics
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anonymous
  • anonymous
how do i find the value of x in this equation?
Mathematics
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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anonymous
  • anonymous
|dw:1327976898833:dw|
anonymous
  • anonymous
x=tan30 * 7
anonymous
  • anonymous
so it would be \[x =\tan30\times7?\]

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anonymous
  • anonymous
\[\tan \theta=opposite/adjacent\], so tan30=x/7, multiply both side by 7
anonymous
  • anonymous
you actually do not need trig for this, just know the ratios of the triangle
anonymous
  • anonymous
can you show me what the equation would be?
anonymous
  • anonymous
for that triangle , if the short side is 1, the ratios are \[1,\sqrt{3},2\] for short side, long side, hypotenuse
anonymous
  • anonymous
|dw:1327977185469:dw|
anonymous
  • anonymous
tan 30 = x/7 x = 7 * tan 30 = 4.042 OR \[7/\sqrt{3}\]
anonymous
  • anonymous
so you know \[\sqrt{3}x=7\] and this \[x=\frac{7}{\sqrt{3}}\]
anonymous
  • anonymous
thanks

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