ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Specialist Mathematics => Topic started by: MathDude17 on April 23, 2020, 08:33:57 pm

Title: Unit 1 Trig Help
Post by: MathDude17 on April 23, 2020, 08:33:57 pm

Hey!
I'm doing a past paper and am stumped by this:
Prior to this question (in question c, which question d refers to), I proved that:
R^2=-cos(theta)

How do I simplify this equation?

Title: Re: Unit 1 Trig Help
Post by: S_R_K on April 24, 2020, 09:14:55 am

If you replace R with -cos(theta) you have an expression "in terms of r and theta".

So what's wrong with that?