| Hint | Answer | % Correct |
|---|---|---|
| sin^2x+cos^2x | 1 | 67%
|
| cos2x | 1-2sin^2x | 50%
|
| cos2x | 2cos^2-1 | 33%
|
| sin2x | 2sinx cosx | 33%
|
| tan2x | 2tanx/1-tan^2x | 33%
|
| 1+cot^2x | csc^2x | 33%
|
| tan^2x+1 | sec^2x | 33%
|
| cos2x | cos^2x-sin^2x | 0%
|