For 0 < < 2 , the solution(s) of _ m=1 ^ 6 cosec ( + (m - 1) 4 ) cosec ( + m 4 ) = 4 2 is(are)

JEE Advanced 2009 Mathematics question

For , the solution(s) of

cosec(θ + )cosec(θ + ) = 4

is(are)

Answer: (C),(D)

For B − A = : . The sum telescopes: $2[θ - (θ + )] =

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Question ID VK-037758