A-Level Maths: E7-33 [Trig Equations: Solve sin(3x-54) = 0.25 between 180 and 540 degrees]

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Thank you very much, I subscribed from 3 different accounts

QuaBaller
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Sir, 1 period =120 degree, and this can take up with 360 degree divided by 3 which in 3x?

zhenchengwong
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Thanks for the video. Why does adding 120 degrees to 732 degrees give 193 degrees?

davidwhite
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do i have to show all that working if i can type into calculator
i mean writing the graph is in 120degrees period so 22.8+2x120= 263
ANS+120= and so on

Masowe.
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sir you uploaded this video on my birthday btw but you see the ranges to solve 180<x<540 wouldnt you need to times the range by three and -54 or is that not a thing your supposed to do?

x_nova_x
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do you still get the marks if you put the values of x that are not needed

O_Two_