Register

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.
asked 133k views
3 votes
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
asked
User Umesh Maharshi
by
8.4k points

2 Answers

2 votes

Answer:

b 21

Explanation:

answered
User Vitalii Blagodir
by
8.8k points
2 votes
2ab·cos(C) = a² +b² -c²
.. = 4² +3² -2²
.. = 16 +9 -4
.. = 21 . . . . . . . matches selection B
answered
User Bian
by
9.0k points
← Prev Question Next Question →

Related questions

User Scanningcrew
asked Apr 18, 2019 149k views
The law of cosines a2+b2-2abcosC=c2. Find the value of 2abcosC.
Scanningcrew asked Apr 18, 2019
by Scanningcrew
7.8k points
1 answer
5 votes
149k views
User Achak
asked Nov 6, 2019 57.5k views
The law of cosines is a2 +b2-2abcosC=c2 find the value of 2abcosC
Achak asked Nov 6, 2019
by Achak
8.1k points
2 answers
1 vote
57.5k views
User Bartos
asked Jul 8, 2019 50.9k views
The law of cosines is a2+b2-2abcosC=c2 find the value of 2abcosC
Bartos asked Jul 8, 2019
by Bartos
8.4k points
2 answers
5 votes
50.9k views
Ask a Question
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.

Categories

Other Questions

What is .725 as a fraction
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Link Copied!