ericalexington ericalexington
  • 23-07-2018
  • Mathematics
contestada

It would be great if i can get some help. Thank you. Include explanation please

It would be great if i can get some help Thank you Include explanation please class=

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DeanR
DeanR DeanR
  • 23-07-2018

We're given two sides and the included angle and asked to find the third side. That's the Law of Cosines.


[tex] c^2 = a^2 + b^2 - 2 a b \cos C[/tex]


[tex]c = \sqrt{15^2 + 20^2 - 2 (15)(20) \cos 50^\circ} \approx 15.5 \textrm{ feet}[/tex]



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