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If θ is said to be an acute angle, and 4 cos2 θ - 1 = 0, then what is the value of tan (θ - 150)?
  • a)
    1
  • b)
    √2
  • c)
    1/√3
  • d)
    None of the above
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If θ is said to be an acute angle, and 4 cos2θ - 1 = 0, th...
Given 4 cos2 θ - 1 = 0
4 cos2 θ = 1
cos2 θ = 1/4
cos θ = 1/2
Or, θ = 600
So, tan (θ - 150) = ?
⇒ tan (600 - 150)
= tan 450
= 1
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Community Answer
If θ is said to be an acute angle, and 4 cos2θ - 1 = 0, th...
A.. Because the value of tan is 0-15 so it will be 1 simple as it is
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