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

Trigonometric ratios of special angles

Problem

Evaluate the expression without the use of a calculator.
sine, left parenthesis, 30, degree, right parenthesis, equals
Stuck?
Stuck?