Trigonometry

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Solve the triangle using the law of cosine:
a= 5
b= 6
y= 35

• Trigonometry -

odd labels, but I can only assume that

c^2 = a^2+b^2 - 2ab cosy
= 25+36-2(5)(6)(.819)
= 11.86

c = 3.44

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