TS EAMCET 7 May 2018 Shift 1 Solved Paper

Section: Mathematics

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Question : 20 of 160

Marks: +1, -0

If sin θ + sin2 θ = 1 and cos12 θ + a cos10 θ + b cos8 θ + c cos6 θ + d = 0 then

ab = cd
ac = bd
ab + cd = 0
ac + bd = 0

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