Q262
If tan4θ = cot(40° - 2θ), then θ is equal to:
A.
20°
B.
25°
AnswerC.
35°
D.
30°
Answer: Option B
Solution
Answer: Option B
Solution:
tan4θ = cot(40° - 2θ)tan4θ = cot(90° - 40° + 2θ)
tan4θ = tan(50° + 2θ)
4θ = 50° + 2θ
2θ = 50°
θ = 25°