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Homework Statement
simplify cosx^{4}-sinx^{4}
The Attempt at a Solution
I got cos2x
does anybody wanna solve this and let me know if I am right ?
Hi synergix!Homework Statement
simplify cosx^{4}-sinx^{4}
The Attempt at a Solution
I got cos2x
does anybody wanna solve this and let me know if I am right ?