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

The law of cosines a2+b2-2abcosC=c2. Find the value of 2abcosC.-example-1
User Umesh Maharshi
by
7.5k points

2 Answers

2 votes

Answer:

b 21

Explanation:

User Vitalii Blagodir
by
7.8k points
2 votes
2ab·cos(C) = a² +b² -c²
.. = 4² +3² -2²
.. = 16 +9 -4
.. = 21 . . . . . . . matches selection B
User Bian
by
8.0k points
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