help me please?..................
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sin+cos=3sin-3cos
4cos=2sin
tan=2
sin=2/sqrt(5)
cos=1/sqrt(5)
sin^4-cos^4=(16/25)-(1/25)=3/5=0.6
4cos=2sin
tan=2
sin=2/sqrt(5)
cos=1/sqrt(5)
sin^4-cos^4=(16/25)-(1/25)=3/5=0.6
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