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The first number is divided by the second number. The quotient obtained after dividing first and second number is reversed to obtain the third number. (520, 8, 56) → (520 ÷ 8) = 65, reverse of 65 is 56. (240, 5, 84) → (240 ÷ 5) = 48, reverse of 48 is 84. (156, 4, 93) → (156 ÷ 4) = 39, reverse of 39 is 93. (203, 7, 92) → (203 ÷ 7) = 29, reverse of 29 is 92. (333, 9, 83) → (333 ÷ 9) = 37, reverse of 37 is 73
sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
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