Cos alpha cos 2 alpha cos 4 alpha cos 8 alpha = 1 / 16, if alpha = 24 degree? Share with your friends Share 2 Rajat Sethi answered this cos 24 × cos 48 × cos 96 × cos 192 =12 ×1sin 24×(2sin 24cos 24) × cos 48 × cos 96 × cos 192 =122 ×1sin 24×(2sin 48 × cos 48) × cos 96 × cos 192 =123 ×1sin 24 ×( 2sin 96 × cos 96) × cos 192 =124 ×1sin 24×(2 sin 192 × cos 192 )=124 ×1sin 24×sin 384=124 ×1sin 24×sin (2π +24)=124 ×1sin 24×sin 24=116 14 View Full Answer
