front 1 sin2x | back 1 2sinxcosx |
front 2 cos2x | back 2 cos²x - sin²x 2cos²x - 1 1 - 2sin²x |
front 3 tan2x | back 3 2tanx / 1 - tan²x |
front 4 sin(A+B) | back 4 sinAcosB + sinBcosA |
front 5 sin(A-B) | back 5 sinAcosB - sinBcosA |
front 6 cos(A+B) | back 6 cosAcosB - sinAsinB |
front 7 cos(A-B) | back 7 cosAcosB + sinAsinB |
front 8 tan(A+B) | back 8 tanA + tanB / 1 - tanAtanB |
front 9 tan(A-B) | back 9 tanA - tanB / 1 + tanAtanB |
front 10 sin²x + cos²x | back 10 1 |
front 11 1 + tan²x | back 11 sec²x |
front 12 1 + cot²x | back 12 csc²x |