(Cos^267degree-sin^223 degree)?
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=(cos^2 67degree-sin^2 23degree)
=(sin^2(90-67degree)-sin^2 23degree)
=(sin^2 23degree-sin^2 23degree)
=0
hope it will help you.
please mark as brainlist.
=(sin^2(90-67degree)-sin^2 23degree)
=(sin^2 23degree-sin^2 23degree)
=0
hope it will help you.
please mark as brainlist.
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