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[" If: "|[1+sin^(2)theta,sin^(2)theta,si...

[" If: "|[1+sin^(2)theta,sin^(2)theta,sin^(2)theta],[cos^(2)theta,1+cos^(2)theta,cos^(2)theta],[4sin4 theta,4sin4 theta,1+4sin4 theta]|=0," then: "sin4 theta=],[[" (a) "0.5," (b) "1," (c) "-0.5," (d) "-1]]

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