prove so L.S. = R.S. sin8A = 8sinAcosAcos2Acos4A please help have test tommorow thanks
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Hello, getem j! We're expected to know this identity: . Prove: . We have: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
wow thank you so much , your a life saver
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