Question

Use trigonometric ratios to solve the right triangle.

Answer 1

`DF=15, DE=5√(3)`

Explanation:

`sin(60)=(DF)/(EF) =(DF)/(10√(3) )\\DF=10√(3) sin(60)=10√(3) * (√(3) )/(2) =15\\cos(60)=(DE)/(EF) =(DE)/(10√(3) )\\DE=10√(3) cos(60)=10√(3) * (1 )/(2) =5√(3)`