anonymous
  • anonymous
can anyone help me with either of these two questions? i am posting a picture of them in this
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
You have two linear equations in cos and sin. Solve them first.

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anonymous
  • anonymous
first one solve \[3x-4y=-4\] \[4x+3y=-3\]
anonymous
  • anonymous
Multiply top equation by 3 and bottom one by 4, add. You will get an equation in cos(x) only. Then, you go solve for sin(x). Then, cot(x) is nothing but cos(x)/sin(x).
anonymous
  • anonymous
get \[x=-\frac{24}{25},y=\frac{7}{25}\] so cotangent is \[-\frac{24}{7}\] if i am not mistaken
anonymous
  • anonymous
second one locate \[\frac{13\pi}{2}\] on the unit circle
anonymous
  • anonymous
note that it is coterminal with \[\frac{\pi}{2}\] and the coordinates of that point on the unit circle are (0,1) take your answers from that point
anonymous
  • anonymous
THANKS SO MUCH
anonymous
  • anonymous
so i start at that coordinate and
anonymous
  • anonymous
so what does the triangle look like? i know its 1 going straight up but what/ how do i find out the other sides?
anonymous
  • anonymous
|dw:1332898478868:dw|

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