HOW TO SOLVE TRIGONOMETRY USING CASIO CALCULATOR: Casio fx-991 ex


Trigonometry is one of the topics in algebra that can be solved using Casio fx-991 ex or casio fx-570 ex classwiz scientific calculator as a shortcut trick. 


In this video, I explained and showed how you can solve trigonometry with casio fx-991 ex or casio fx-570 ex classwiz scientific calculator as a trick or hack. 


After watching this video, you will be able to solve problems involving trigonometry using casio fx-991 ex or casio fx-570 ex classwiz scientific calculator as a trick or hack easily and fast especially for multiple choice questions in algebra. 


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