Answer A
Using Polar Coordinates we mark a point by how far away, and what angle it is.
To find polar co ordinates, When we know a point in Cartesian Coordinates (x,y) and we want it in Polar Coordinates (r,θ) we solve a right triangle with two known sides(2,-2)
using Pythagoras theorem,
base^2 + altitude ^ 2 = hypotenuse ^2
2^2 +(-2)^2 = hypotenuse
Hypotenuse = 2√2
to find angle we can use tan(angle) = altitude / base = (-2/2) = -1
so angle can be 3π/4 or 7π/4
as per the given options,
answer is 2√2,7π/4
