Identities
Expand cos (A - B)
What is cos A cos B + sin A sin B?
sin 125 cos 95 - cos 125 sin 95
List all angles 0 to 360 degrees, for sin x = 1/2
What is 30 and 150 degrees?
11pi/6 radians to degrees
What is 330 degrees?
All solutions 0 to 2π for sin²x = 1/4
What is π/6, 5π/6, 7π/6, and 11π6?
All solutions in radians for sinx = √2/2
What is ∏/4 and 3∏/4?