There are three function keys on the calculator.
Example: If you need the cosine of a 45° angle, enter 45 and push the cos key.
The number in the display is the cosine of a 45° angle.
Using the Function Keys: Practice
Find the indicated function for each angle below. Round off to 4 decimal places.
(1) tan 45° (5) cos 54°
(2) sin 33° (6) tan 75°
(3) cos 25° (7) sin 89°
(4) sin 60° (8) cos 60°
Answers.