Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Use an identity to write the expression as a single trigonometric function or as a single number. 2 cos2 22.5° - 1: ; ; ;
Right answer summary:
Question state: todo
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Use an identity to write the expression as a single trigonometric function or as a single number. 2 cos2 22.5° - 1: ; ; ;
Right answer summary:
Question state: todo