![Using the Sin, Cos and Tan FUNCTINs on the scientific calculator#trigonometry #significantfigures - YouTube Using the Sin, Cos and Tan FUNCTINs on the scientific calculator#trigonometry #significantfigures - YouTube](https://i.ytimg.com/vi/Iw1KwGDUFIw/hqdefault.jpg)
Using the Sin, Cos and Tan FUNCTINs on the scientific calculator#trigonometry #significantfigures - YouTube
![Just wondering why my calculator is not giving a result for tan-1(-2/0). The correct answer is apparently meant to be -pi/2 radians. Mode is set radians. : r/EngineeringStudents Just wondering why my calculator is not giving a result for tan-1(-2/0). The correct answer is apparently meant to be -pi/2 radians. Mode is set radians. : r/EngineeringStudents](https://preview.redd.it/hi4j8vrkndb71.jpg?auto=webp&s=c810c375a2fc664c62e9a75826143e4d2ccfbc95)
Just wondering why my calculator is not giving a result for tan-1(-2/0). The correct answer is apparently meant to be -pi/2 radians. Mode is set radians. : r/EngineeringStudents
![Sin, Cos, and Tan with the TI-84 Graphing Calculator | Math Tutor DVD - Online Math Help, Math Homework Help, Math Problems, Math Practice! Sin, Cos, and Tan with the TI-84 Graphing Calculator | Math Tutor DVD - Online Math Help, Math Homework Help, Math Problems, Math Practice!](https://i.ytimg.com/vi/69rwfMGUYjM/maxresdefault.jpg)