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F is fourth to the left of K, who is second to the right of G. J is fourth to the right of G and is second to the left of M G is not the immediate neighbour of L or E. H is not an immediate neighbour of either M or F. H is not female. I is not an immediate neighbour of either K or J. No male is an immediate neighbour of J. One of the persons sitting on the extreme ends is a male. The immediate neighbours of H are female.
L does not sit second to the left of E. So, the final arrangement is,
sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
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Simplify the given equation: