SOLUTION: Which of the following is NOT a solution to (3tan^2x-1)(3tan^2x-3)=0? a. 30 degrees b. 120 degrees c. 150 degrees d. 225 degrees e. 315 degrees

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Which of the following is NOT a solution to (3tan^2x-1)(3tan^2x-3)=0? a. 30 degrees b. 120 degrees c. 150 degrees d. 225 degrees e. 315 degrees      Log On


   

Question 1170386: Which of the following is NOT a solution to (3tan^2x-1)(3tan^2x-3)=0?
a. 30 degrees
b. 120 degrees
c. 150 degrees
d. 225 degrees
e. 315 degrees
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

using calculator
%283tan%5E2%2830%29-1%29%283tan%5E2%2830%29-3%29=0....... true
%283tan%5E2%28120%29-1%29%283tan%5E2%28120%29-3%29=0 .........false
%283tan%5E2%28150%29-1%29%283tan%5E2%28150%29-3%29=0....... true
%283tan%5E2%28225%29-1%29%283tan%5E2%28225%29-3%29=0....... true
%283tan%5E2%28315%29-1%29%283tan%5E2%28315%29-3%29=0....... true
=> answer is: b. 120 degrees