Question

Use your knowledge of special right triangles to find y. Write your answer in simplest radical form.

Please be quick

Answer 1

`\sin(30°) = (10)/(y) \\ (1)/(2) = (10)/(y) \\ \boxed{y = 20 \: mi}`

or,

`\cos(60°) = (10)/(y) \\ (1)/(2) = (10)/(y) \\ \boxed{y = 20 \: mi}`

20 mi is the right answer.