[" (4) If "sin theta=(a^(2)+2ab)/(a^(2)+...

[" (4) If "sin theta=(a^(2)+2ab)/(a^(2)+2ab+2ab^(2))" then "tan theta=],[" a) "(a^(2)-2ab)/(2ab+2b^(2))" b) "(a^(2)+2ab)/(2ab-2b^(2))],[" c) "(a^(2)+2ab)/(2ab+2b^(2))" a) None of these."]

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