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If 2sin2θ + 4 cos2θ = 3, then find the value of θ ?
  • a)
    30°
  • b)
    60°
  • c)
    45°
  • d)
    90°
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If 2sin2θ + 4 cos2θ = 3, then find the value of θ ?a...
From the given data
We know that 2sin2θ + 4 cos2θ = 3
⇒ 2(1 - cos2θ ) + 4 cos2θ = 3
⇒ 2 – 2cos2θ + 4 cos2θ = 3
⇒ 2 cos2θ = 3 - 2
⇒ cos2θ = 1/2
⇒ cosθ = 1/√2
⇒ θ = 45° 
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If 2sin2θ + 4 cos2θ = 3, then find the value of θ ?a)30°b)60°c)45°d)90°Correct answer is option 'C'. Can you explain this answer?
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