Question

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Answer 1

11.1

Explanation:

cos42 = adjacent/hypotenuse

cos42 = x/15

x = 15cos42

x = 11.1471723822

Answer 2

11.1 =x

Explanation:

Since we have a right triangle, we can use trig functions

cos theta = adjacent side/ hypotenuse

cos 42 = x/15

Multiply each side by 15

15 cos 42 = x

11.14717238 =x

Rounding to the nearest tenth

11.1 =x