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ad-work [718]
3 years ago
13

Pls answerfor 10 points

Mathematics
1 answer:
Gnesinka [82]3 years ago
4 0

Answer:your welcome

Step-by-step explanation:

Mhhh

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Step-by-step explanation:

The law of cosines tells you ...

  b² = a² +c² -2ac·cos(B)

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  \cos(B)=\dfrac{-(-2ac)\pm\sqrt{(-2ac)^2-4(b^2)(-b^2)}}{2b^2}\\\\\cos(B)=\dfrac{ac}{b^2}\pm\sqrt{\left(\dfrac{ac}{b^2}\right)^2+1}

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  \cos(B)=\dfrac{ac}{b^2}-\sqrt{\left(\dfrac{ac}{b^2}\right)^2+1}

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