Question

change (-5,-7) into polar form and round both to the nearest tenth

Answer 1

We have (x,y)=(-5,-7)
We have to change it to (r,θ)

Answer 2

To calculate use,

\[\huge\ r = \sqrt{x² + y²}\]

\[\huge\ θ = \arctan(y/x)\]

Answer 3

I'm a little confused. Can you walk me through it?

Answer 4

r^2=(-5)^2+(-7)^2
r^2=25+49
r^2=74
r=sqrt 74
but you must use a calculator to find θ.

Answer 5

@marsss I guess i explained you something back there :/

Answer 6

but she wanted to walk through :)

Answer 7

@marsss -_-

Answer 8

Thanks :)

Answer 9

welcome :)