SOLUTION: Which of the following is not a solution to the equation 4sin^2x=1? 1. 30 degrees 2. 210 degrees 3. 150 degrees 4. 120 degrees

Algebra ->  Trigonometry-basics -> SOLUTION: Which of the following is not a solution to the equation 4sin^2x=1? 1. 30 degrees 2. 210 degrees 3. 150 degrees 4. 120 degrees      Log On


   

Question 617453: Which of the following is not a solution to the equation 4sin^2x=1?
1. 30 degrees
2. 210 degrees
3. 150 degrees
4. 120 degrees
Answer by jsmallt9(3758) About Me  (Show Source):
You can put this solution on YOUR website!
With multiple choice you could try them out and see. Or you could figure out which one has the different reference angle. Or you go through the process of solving the equation:
4sin%5E2%28x%29+=+1
sin%5E2%28x%29+=+1%2F4
sqrt%28sin%5E2%28x%29%29+=+sqrt%281%2F4%29
sin%28x%29+=+1%2F2 or sin%28x%29+=+-1%2F2
etc.