trigonometric range question (1 Viewer)

[abdog]

Determine the values of x for which 2sin3x > or equal to 1.

 

[Kizzy1]

If you're working in deg, -110, -70, 10, 50, 130, 170 etc. Try drawing the question as a graph to get a better idea of how it works. You can start by simplifying to sin(3x) = 0.5 and then use the fact that sin(30) = 0.5 to get your answers.

 

[braintic]

If you're working in deg, -110, -70, 10, 50, 130, 170 etc. Try drawing the question as a graph to get a better idea of how it works. You can start by simplifying to sin(3x) = 0.5 and then use the fact that sin(30) = 0.5 to get your answers.

As there is no degree symbol after x, the default unit is radians.

 

[TheMathStudent]

If you were after the general solution, the answer would be:

where k is an integer
http://en.wikipedia.org/wiki/Inverse_trigonometric_functions#General_solutions