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algol13
3 years ago
11

Please help me and thank you!!

Mathematics
1 answer:
arlik [135]3 years ago
6 0
Subtract c^2 from a^2+b^2, on the left.

Next, enclose your result inside parentheses.

Next, place a " - " sign in front of this last expression. 

This result is the value of 2abcos C.
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