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If tan4 = cot(40 - 2 ) then is equal to...

This question belongs to Arithmetic Ability Trigonometry
Trigonometry
?

If tan4θ = cot(40° - 2θ), then θ is equal to:

Answer & Solution
Correct Answer: Option B
tan4θ = cot(40° - 2θ)
tan4θ = cot(90° - 40° + 2θ)
tan4θ = tan(50° + 2θ)
4θ = 50° + 2θ
2θ = 50°
θ = 25°
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