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Speed of train Q = 360/12 = 30 m/s Speed of train P = 2/5 x 30 = 12 m/s Accordingly, (l + 360)/(12 + 30)= 100/7 there for the length of the train P will be length of train p =240 m Ans.
sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
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Simplify the given equation:
