Question

Como resolver: cos (3θ) = 0, para poder achar o valor de θ?

Answer 1

Ola Yuyuka

cos(3θ) = 0 

θ = (kπ)/3 - π/6

k = 1,  θ = π/3 - π/6 = 2π/6  - π/6 = π/6 = 180/6 = 30°
k = 0,  θ = -π/6 = -180/6 = -30°

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