![Can someone let me know how I can use the reverse tangent feature on this calculator? I press the tan key but it does not show me how to input a reverse Can someone let me know how I can use the reverse tangent feature on this calculator? I press the tan key but it does not show me how to input a reverse](https://i.redd.it/qudxru7sfbm71.jpg)
Can someone let me know how I can use the reverse tangent feature on this calculator? I press the tan key but it does not show me how to input a reverse
![The Tan Key. How To Use The Tan Key To Convert Angles On A Casio Classwiz fx 85GTX Calculator - YouTube The Tan Key. How To Use The Tan Key To Convert Angles On A Casio Classwiz fx 85GTX Calculator - YouTube](https://i.ytimg.com/vi/pUSi_j7dg1M/maxresdefault.jpg)
The Tan Key. How To Use The Tan Key To Convert Angles On A Casio Classwiz fx 85GTX Calculator - 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)