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trigonometric range question (1 Viewer)

abdog

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

Kizzy1

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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

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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.
 

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