If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Relate ratios in right triangles


Consider right triangle DEF below.
A right triangle D E F. Angle E D F is a right angle.
Which expressions are equivalent to cos(E)?
Choose 2 answers: