What is the standard value of cos 45°?
Note
This is a standard special-angle value students should recognize: cos 45° = √2/2. Remembering 0°, 30°, 45°, 60°, and 90° helps solve many right-triangle problems quickly.
What is the standard value of cos 45°?
This is a standard special-angle value students should recognize: cos 45° = √2/2. Remembering 0°, 30°, 45°, 60°, and 90° helps solve many right-triangle problems quickly.