Question No.5 ( ii & iii )
Lesson#7
Question No.5 ( ii & iii )
Q5: Prove that:
(iii): sin 10° sin 30° sin 50° sin 70°=1/16
(ii): sin π/9 sin 2π/9 sin π/3 sin 4π/9=3/16
This is end of Ex. 10.4 , now practice yourself. Thanks.
Trigonometric Identities
Chapter No 10
Exercise No 10.4
Mathematics
part 1
Question No.5 ( ii & iii )
Q5: Prove that:
(iii): sin 10° sin 30° sin 50° sin 70°=1/16
(ii): sin π/9 sin 2π/9 sin π/3 sin 4π/9=3/16
This is end of Ex. 10.4 , now practice yourself. Thanks.
Trigonometric Identities
Chapter No 10
Exercise No 10.4
Mathematics
part 1