Sin6a+cos6a=1-3sin2a+3sin4a
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Answer:cos6a+sin6a
(Cos2a)^3+sin6a
(1-sin2a)^3+sin6a
1-3sin2a+3sin4a-sin6a+sin6a
1-3sin2a+3sin4a
Step-by-step explanation:
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