![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
![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://preview.redd.it/qudxru7sfbm71.jpg?width=640&crop=smart&auto=webp&s=440bd918a60bebb78a458c5f4b9014cc71ebae95)
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
![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://i.redd.it/hi4j8vrkndb71.jpg)