1)Why is it thatsigma [ k=1 to (n-1) ] cos [2k(pi)/n] = -1 ????2) Could you suggest anyapproach forthis one ?let n be an odd integer. Ifsin [n(theta)] = sigma [ r=0 to n ] b (subscript r ) [sin (theta)]^rthen find the value of "b subscript 0 " and"b subsript 1 "

shakya sur , 15 Years ago

Grade 11