Solving Trigonometric Equations. Solve algebraically sin2x=0.5, 0<x<2pi?
I only got pi/12 and 5pi/12, but the answer key says that 13pi/12 and 17pi/12 are also answers. Please explain how to get these other two answers.
I only got pi/12 and 5pi/12, but the answer key says that 13pi/12 and 17pi/12 are also answers. Please explain how to get these other two answers.
1 Answer
See below.
Explanation:
The missing values are just:
All that has happened is we have gone round another rotation, i.e.
This can often catch you out. You just need to remember that you have the ratio of
Maybe this will help. I think what is confusing you is the fact that