SOLUTION: cos 2x – 3sin x cos 2x = 0 for the principal value(s) to two decimal places

Algebra ->  Trigonometry-basics -> SOLUTION: cos 2x – 3sin x cos 2x = 0 for the principal value(s) to two decimal places      Log On


   

Question 748635: cos 2x – 3sin x cos 2x = 0 for the principal value(s) to
two decimal places
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
cos 2x – 3sin x cos 2x = 0 for the principal value(s) to
two decimal places
***
cos 2x–3sinxcos2x = 0
factor out cos2x
1-3sinx=0
3sinx=1
sinx=1/3
x=19.47º