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Nitella [24]
2 years ago
12

Given any triangle ABC with corresponding side lengths a,b,c the law of cosines states:? Can someone explain to me how I get thi

s
English
1 answer:
a_sh-v [17]2 years ago
4 0
As per convention:
- the angle at A is named A, the angle at B is named B, and the angle at C is named C
- the side of leght a is the side opposed to A, the side of length b is opposed to B, and the side of length c is opposed to C.

Now just state the law of cosines:

c^2 = a^2 + b^2 - 2ab cos(C)

Also, a^2 = c^2 + b^2 - 2bc cos (A)

And, b^2 = a^2 + c^2 - 2ac cos (B)

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