![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)
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
![Scientific Calculators,10-Digit LCD Display Desk Calculator with Writing Tablet,Professional Desktop Calculator for High School and College | Walmart Canada Scientific Calculators,10-Digit LCD Display Desk Calculator with Writing Tablet,Professional Desktop Calculator for High School and College | Walmart Canada](https://i5.walmartimages.com/asr/098eef8f-175e-4c99-bcaf-e14ee400692d.09048b50ac05e5d79228897a1ead7286.jpeg?odnHeight=2000&odnWidth=2000&odnBg=ffffff)
Scientific Calculators,10-Digit LCD Display Desk Calculator with Writing Tablet,Professional Desktop Calculator for High School and College | Walmart Canada
![SOLVED: QUESTION 1 [15 marks] (a) Without using a calculator, find the exact value of Cos2550 cos1950 cos(1809) [Hint: Use sum-to-product formula to simplify]: [3] (b) Without using calculator; find the exact SOLVED: QUESTION 1 [15 marks] (a) Without using a calculator, find the exact value of Cos2550 cos1950 cos(1809) [Hint: Use sum-to-product formula to simplify]: [3] (b) Without using calculator; find the exact](https://cdn.numerade.com/ask_images/4cea4ddc81a94fde914f2e43ee3c462f.jpg)
SOLVED: QUESTION 1 [15 marks] (a) Without using a calculator, find the exact value of Cos2550 cos1950 cos(1809) [Hint: Use sum-to-product formula to simplify]: [3] (b) Without using calculator; find the exact
![Use a calculator to approximate the value of the expression. Round your answer to the nearest hundredth. tan^(-1) 5.9. | Homework.Study.com Use a calculator to approximate the value of the expression. Round your answer to the nearest hundredth. tan^(-1) 5.9. | Homework.Study.com](https://homework.study.com/cimages/videopreview/videopreview-full/pwin9pyptf.jpg)
Use a calculator to approximate the value of the expression. Round your answer to the nearest hundredth. tan^(-1) 5.9. | Homework.Study.com
What is Inverse Tangent? | Inverse Tangent Function & Formula - Video & Lesson Transcript | Study.com
![Scientific Calculator, Scientific Calculator with 240 Function Student 2-Line Engineering Scientific Calculator for School and Business Stationary Calculating Tools, Black: Amazon.co.uk: Stationery & Office Supplies Scientific Calculator, Scientific Calculator with 240 Function Student 2-Line Engineering Scientific Calculator for School and Business Stationary Calculating Tools, Black: Amazon.co.uk: Stationery & Office Supplies](https://m.media-amazon.com/images/I/51ldNuWKlIL._AC_SL1000_.jpg)
Scientific Calculator, Scientific Calculator with 240 Function Student 2-Line Engineering Scientific Calculator for School and Business Stationary Calculating Tools, Black: Amazon.co.uk: Stationery & Office Supplies
![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
![The Tan Inverse Button. How To Work Out The Inverse Tan On A Casio Classwiz fx GT85x Calculator - YouTube The Tan Inverse Button. How To Work Out The Inverse Tan On A Casio Classwiz fx GT85x Calculator - YouTube](https://i.ytimg.com/vi/2O-cMtG5rxw/maxresdefault.jpg)
The Tan Inverse Button. How To Work Out The Inverse Tan On A Casio Classwiz fx GT85x Calculator - YouTube
![Texas Instruments TI-30X IIS 2-Line Scientific Calculator, Black with Blue Accents 3 Pack : Amazon.in: Office Products Texas Instruments TI-30X IIS 2-Line Scientific Calculator, Black with Blue Accents 3 Pack : Amazon.in: Office Products](https://m.media-amazon.com/images/I/71IS4VIaJ2L._SX679_.jpg)