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If sec4θ = cosec(θ + 20°), then θ is equal to:
Answer & Solution
Correct Answer:
Option
C
sec4θ = cosec(θ + 20°)
sec4θ = sec[90° - (θ + 20°)]
sec4θ = sec(70° - θ)
4θ = 70° - θ
5θ = 70°
θ = 14°
sec4θ = sec[90° - (θ + 20°)]
sec4θ = sec(70° - θ)
4θ = 70° - θ
5θ = 70°
θ = 14°
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