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Find the value of x. Round to the nearest tenth.
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4 votes
Find the value of x.
Round to the nearest tenth.

Find the value of x. Round to the nearest tenth.-example-1
User Marlissa
by
4.1k points

1 Answer

3 votes

Answer:

x ≈ 42.3

Explanation:

The law of cosines is given. For this problem, ...

a = 25, b = 30, c = x , C = 100°

Filling in these values, we have ...

x^2 = 25^2 +30^2 -2(25)(30)cos(100°)

x^2 ≈ 1785.4723

x ≈ √1785.4723 . . . . take the square root

x ≈ 42.3

User Cody
by
4.1k points
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