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I will give brainless! Answer and clearly explain.

I will give brainless! Answer and clearly explain.-example-1

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Explanation :

Law of Cosines, which states that in any triangle has sides of a, b, and c.

a is 3

c is not given

Therefore Length b is 10

c² = 3²+10²-2(3)(10)cos 34°

c² = 9 + 100 - 60cos 34°

c² = 109 - 60cos 34°

Using a calculator:

c² ≈ 109 - (60)(0.829)

c² ≈ 109 - 49.74

c² ≈ 59.26

Taking the square root of both sides:

c ≈ √59.26

c ≈ 7.69

c ≈ 8

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