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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematical Methods CAS => Topic started by: itsMRPHI on November 04, 2010, 12:26:10 pm

Title: Trig equations
Post by: itsMRPHI on November 04, 2010, 12:26:10 pm

I'm having trouble getting solutions where there is a negative domain involved. I can solve perfectly fine when its only a positive domain. Any tips? cheers

Title: Re: Trig equations
Post by: Studyinghard on November 04, 2010, 12:33:49 pm

Do the same thing you do when you go in a positive direction but put a minus to all the answers when you're done

Title: Re: Trig equations
Post by: TrueTears on November 04, 2010, 10:14:13 pm

Quote from: itsMRPHI on November 04, 2010, 12:26:10 pm

I'm having trouble getting solutions where there is a negative domain involved. I can solve perfectly fine when its only a positive domain. Any tips? cheers

Just remember that when you have a negative domain, do the same thing but keep subtracting periods to get answers in the required domain.