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Question No.5 ( ii & iii )
22 Views • Sep 30, 2015
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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
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