madistupid
27.02.2021 •
Mathematics
C^2cos^2 B+ b^2cos^2 C + bc cos (B - C) = 1/2(a^2+b^2+ c^2)
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Ответ:
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me vale
Step-by-step explanation:
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Ответ:
did you meant number 13?
your answer is when you trying to reduce a fraction to the same denominator depends on what they asked you using the gcf or the lcm