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Question Number 208437 by efronzo1 last updated on 16/Jun/24
Answered by som(math1967) last updated on 16/Jun/24
a=sin84+cos66⇒a=sin84+sin24⇒a=2sin54cos30∴a=2×5+14×32=3(5+1)4b=sin48−sin12⇒b=2sin18.cos30=3(5−1)4ab=3(5−1)4×4=34ab=5+15−1⇒a+ba−b=252=5(a+ba−b)8ab=512×8×34=53
Commented by efronzo1 last updated on 16/Jun/24
=53
Commented by som(math1967) last updated on 16/Jun/24
yes
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