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csc²x-4=0

I don't really know how to approach this question. I'm working ahead in my textbook and decided to give it a shot. All help is appreaciated :)

Guest Feb 9, 2019

#1**+1 **

csc = 1/sin

csc^2 = 1/sin^2

1/ sin^2 = 4

sin^2 = 1/4

sin = +- 1/2 Got it from here?

ElectricPavlov Feb 9, 2019

#3**+1 **

arcsin (1/2) = 30 150

arcsin (-1/2) = 330 210 degrees

Sorry! (for the edits)

ElectricPavlov
Feb 9, 2019