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tan 0.5 θ = -1?

tan 0.5 θ = -1 between 0 < θ < 360, find values for θ
(edited 9 years ago)
What have you done/tried so far?
Original post by usycool1
What have you done/tried so far?


i tried to do inverse tan of the -1 and then double both sides and i ended up with -90 but i don't think thats right
Original post by charlottec712
i tried to do inverse tan of the -1 and then double both sides and i ended up with -90 but i don't think thats right


Yes, that's right so far. You want your solutions in the range 0 < θ < 360 though, so use graphs/CAST diagrams/whatever method you've been taught to identify other solutions within the range.

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