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QUESTION
Q
If Sinθ + Sin2θ = 1 then Cos2θ + Cos4θ is equal to ?
Solution
Sinθ + Sin2θ = 1
Sinθ = 1 − Sin2θ
Sinθ = Cos2θ
Sin2θ =...
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In the following passage there are blanks, each of which has been numbered. For each number, five words are suggested one of which fits the blank appropriately. Find out the appropriate word in each case.          As the country embarks on planning (1) the 12th plan (2012 – 2017) period, a key question mark (2) hangs over the process is on the energy requirements.     Growth is energy hungry, and the aspirations of growing at 9 – 10% will (3) huge demands on the energy resources of the country. In this year jigsaw, renewable energy will (4) like never before in the 12th…
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