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08-02-2018
Mathematics

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(−9, 9) (i) find polar coordinates (r, θ) of the point, where r > 0 and 0 ≤ θ < 2π.

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Аноним Аноним

08-02-2018

tan ⊕ 9/-9 = -1 so ⊕ = 3π/4

r = √(9^2+(-9)^2) = 12.73

Answer is (12.73, 3π/4)

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