"IF TANQ=2/3 PROVE THAT SIN2Q COS2Q=1"?

"IF TANQ=2/3 PROVE THAT SIN2Q COS2Q=1"?
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??????????? tan(q)=2/3 ??????????... if so, q=invers tan(2/3)=33.69006726 deg... 2q=67.38013452 deg... sine(67.38013452)=0.923076919... kosine(67.38013452)=0.384615393... sine*kosine=0.355029592... note...sine(x)*kosine(x) gotta be < 1 for all x
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