Find c. Round to the nearest tenth.
7 ft
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320
8 ft
c = [?]ft
Law of Cosines: c2 = a2 + b2 - 2ab cos C

4.2 ft

Step-by-step explanation:

Given the equation for the Law of Cosines, we can rewrite the equation to solve for "c" directly:

So the length of c is approximately 4.2 ft

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

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answer