shakirabreeding shakirabreeding

02-04-2018
Mathematics

contestada

The law of cosines a2+b2-2abcosC=c2. Find the value of 2abcosC.

The law of cosines a2b22abcosCc2 Find the value of 2abcosC class=

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sqdancefan sqdancefan

02-04-2018

2ab·cos(C) = a² +b² -c²
.. = 4² +3² -2²
.. = 16 +9 -4
.. = 21 . . . . . . . matches selection B

Answer Link

drrpepper drrpepper

26-10-2020

Answer:

b 21

Step-by-step explanation:

Answer Link

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