Question

simplify r^2 cos 2 Ɵ = 1 . thanks! , )

Answer 1

Do you mean to change it to a Cartesian equation? What do you mean by "simplify" in this context?

Answer 2

make the equation equal to r.

Answer 3

Is r^2 cos 2 Ɵ = 1 the same as r² cos²(Θ) = 1 or is it r² cos (2Θ) = 1?

Answer 4

r² cos (2Θ) = 1

Answer 5

I don't think this is a satisfactory answer but take a look at the link:

http://www.wolframalpha.com/input/?i=solve+for+r%2C+r%C2%B2+cos+%282%CE%98%29+%3D+1

Answer 6

my professor also tld us that it can be also r² 2 cos (Θ) = 1

Answer 7

i think my prof. was not quite sure what is the right equation.

Answer 8

2 cos (Θ) is not the same as cos (2Θ)

cos(2A) = cos²A − sin²A

Answer 9

no. what i mean is that. if the r² cos 2 (Θ) = 1, is not working, the equation could be
r² 2 cos (Θ) = 1.

Answer 10

find r. .