User contributions
- 10:50, 28 October 2019 (diff | hist) . . (0) . . m Trigonometry (→Tangent)
- 10:49, 28 October 2019 (diff | hist) . . (0) . . m Trigonometry (→Tangent)
- 11:50, 8 October 2019 (diff | hist) . . (0) . . Trigonometry (→Tangent)