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 149k views
5 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 Scanningcrew
by
7.8k points

1 Answer

4 votes
A = 4
B = 3
C = 2

We need to find cos(C)


4 = 16 + 9 - 2(2)(3)(cos(C))

-21 = -12 * cos(C)

cos (C)=  1.75

The answer is
2 * 3 * 4 * 1.75 = 42





answered
User Fantasia
by
8.2k points
← Prev Question Next Question →

Related questions

User Umesh Maharshi
asked Jun 8, 2019 133k views
The law of cosines a2+b2-2abcosC=c2. Find the value of 2abcosC.
Umesh Maharshi asked Jun 8, 2019
by Umesh Maharshi
8.4k points
2 answers
3 votes
133k 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

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
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!