anonymous
  • anonymous
Suppose a triangle has two sides of length 42 and 35, and that the angle between these two sides is 120. What is the length of the third side of the triangle?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
is it 66.78?
anonymous
  • anonymous
law of cosines 42^2 + 35^2 - 2(42)(35)cos(120)
anonymous
  • anonymous
i got 595.30

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anonymous
  • anonymous
yes it is 66.78
anonymous
  • anonymous
42^2 + 35^2 - 2(42)(35)cos(120) = 445.9 Now take the square root = 66.78

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