Çözüldü Conversion from Polar to Cartesian Coordinates - Pythagorean Theorem

https://i72.servimg.com/u/f72/19/97/10/39/polar_14.png
https://images.collegedunia.com/pub...ath Level 2 Subject Test Practice Paper 1.pdf
(The Last Question with no solution or answer key)

240° = 180° + 60° ===> Third Quadrant ===> Either A or C is correct.
tan(60°) = (-√3) / (-1)
[ (-√3)^2 + (-1)^2 ]^0,5 = 2
(-1, -√3).

A is the right choice.

Check By WolframAlpha:
https://www.wolframalpha.com/input?i=convert (2, 240°) to Cartesian coordinates