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  1. If cos α + sec α = √3 , then the value of cos3 α + sec3α is
    1. 2
    2. 1
    3. 0
    4. 4
Correct Option: C

cos α + sec α = √3
∴ cos3 α + sec3 α = (cosα + secα)3 – 3 cosα . secα (cosα + secα)
= (√3)3 - 3 × √3
= 3√3 - 3√3 = 0


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