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anonymous
 one year ago
A triangular lot bounded by three streets has a length of 300 feet on one street, 250 feet on the second, and 420 feet on the third. Find the measure of the largest angle formed by these streets. Which of the following equations can be used to solve the problem?
anonymous
 one year ago
A triangular lot bounded by three streets has a length of 300 feet on one street, 250 feet on the second, and 420 feet on the third. Find the measure of the largest angle formed by these streets. Which of the following equations can be used to solve the problem?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0looks like a law of cosines problem. The largest angle is opposite the longest side

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea..... idk how to do this, i know that the equation is\[c^2=a^2+b^22ab(cosC)\] but i don't know how to apply it.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434124669566:dw Let's say this is our triangle a, b, and c are the lengths and A, B, C are angles

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0420² = 300² + 250²  300(250) cos Θ

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do you see where all the substitutions came from?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes I do!!!!!! Thanks @peachpi
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