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Mathematics 15 Online
OpenStudy (anonymous):

I think I have to solve this problem using Sine/Cosine/or Tangent. But I don't know which one of them to use. I'm looking for side AB which is opposite the 55 degree angle, but sine=opposite/hypotenuse and I don't have a hypotenuse, so which formula would or could I use instead of Sine?

OpenStudy (anonymous):

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