dzakirzyanov dzakirzyanov
  • 28-01-2020
  • Mathematics
contestada

Complete the following equation: a2 = b2 + c2 - ______.
2 bc cos A
2 ca cos B
2 ab cos C
none of the above

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Onoriodefelix
Onoriodefelix Onoriodefelix
  • 28-01-2020

Answer:

2 bc cos A

Step-by-step explanation:

Cosine rule

Answer Link

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