SEPTEMBER 2016 (GP HYPERBOLA)
1 answer:
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Answer:
(2, 120° )
Step-by-step explanation:
To convert from rectangular to polar form, that is
(x, y) → (r, Θ ), use
r =
Θ = (
)
here (x, y ) = (- 1, )
r = )^2
= =
= 2
Θ = (
) = 60° ← related acute angle
Note (- 1, ) is in the second quadrant so Θ must be in the second quadrant.
Θ = 180° - 60° = 120°
(- 1, ) → (2, 120°)