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The logic followed here is as follows: 5 is added to the square of the first number to get the second number. 13² + 5 = 169 + 5 = 174 Similarly, 5 is added to the square of the fifth number to get the sixth number. 25² + 5 = 625 + 5 = 630 So, Third number² + 5 = Fourth number Third number² = 681 – 5 Third number² = 676 Third number= 26
sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
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Simplify the given equation: