KEAM 2011 Math Paper

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Question : 119 of 120

Marks: +1, -0

If 8cos2θ+8sec2θ=65, 0<θ<

π

2

, then the value of 4cos4θ is equal to

−
33
8
−
31
8
−
31
32
−
33
32
−
31
4

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