3 years ago

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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