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  1. If sec2θ + tan2θ = √3 , then the value of (sec4θ - tan4θ) is
    1. 1
      √3
    2. 1
    3. √3
    4. 0
Correct Option: C

sec2θ + tan2θ = √3
and sec2θ - tan2θ = 1
∴ sec4θ - tan4θ = (sec2θ + tan2θ)(sec2θ - tan2θ)
sec4θ - tan4θ = √3 × 1 = √3


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