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[" 28) If "7sin^(2)theta+3cos^(2)theta=4...

[" 28) If "7sin^(2)theta+3cos^(2)theta=4," then find "],[sec theta+cosec theta],[" A) "(2)/(sqrt(3))],[" B) "(2)/(sqrt(3))+2],[" C) "(2)/(sqrt(3))-2],[" D/ None of these "]

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