cutiecomittee123
  • cutiecomittee123
Suppose a triangle has two side lengths of 4 and 4 and the angle between the side sis pi/3. 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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schrodinger
  • schrodinger
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cutiecomittee123
  • cutiecomittee123
I used the SAS formula and came out with 3 as the answer
caozeyuan
  • caozeyuan
it is 4 because pi is 180 and so pi/3 is 60, 180-60=120, since 4=4, two angles are 120/2=60, so all three sides are same
Victoriasushchik
  • Victoriasushchik
Use Law of Cosines: Let a,b,c be the side lengths and let C be the angle between a and b. Then c^2 = a^2 + b^2 - 2ab cos C Now plug in a = 2, b = 3, C = pi/3 c^2 = 2^2 + 3^2 - 2(2)(3) cos (pi/3) c^2 = 4 + 9 - 12*(1/2) c^2 = 4 + 9 - 6 c^2 = 7

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caozeyuan
  • caozeyuan
@Victoriasushchik WHERE are the 2 and 3 coming from
Victoriasushchik
  • Victoriasushchik
thats your question i just answered it t

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