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Use half angle formulas or formula for reducing powers to fill in the blanks in the identity below:

` (\sin(6 x))^4 ` = ` - 1/2 cos `( ` x`) `\ + 1/8 cos ( ` `x`)

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   x    (   ) π DNE
( ) ( ] [ ) [ ] —∞ DNE
< > or All Real Numbers DNE
log logn ln n  | | e 
sin cos tan arcsin arccos arctan  
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