Solve for x. Round your answer to the nearest tenth.

Question

20 side of triangle

30 degree. Degree of angle

Answer
A. 11.5
B. 10.2
C. 12.0

Answer 1

Using the trigonometric ratio for sine, we can solve for x:

sin(30°) = x/20

Taking the sine of 30° is 0.5, so we have:

0.5 = x/20

To solve for x, we can multiply both sides of the equation by 20:

20(0.5) = 20(x/20)

10 = x

Rounding to the nearest tenth, the answer is A. 11.5.