Answer:
11.1 =x
Step-by-step 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
cos42 = adjacent/hypotenuse
cos42 = x/15
x = 15cos42
x = 11.1471723822
