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Artyom0805 [142]
3 years ago
5

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

Mathematics
1 answer:
tankabanditka [31]3 years ago
6 0

Answer:

  x ≈ 42.3

Step-by-step 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

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