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[" Q.15"tan5x tan3x tan2x=tan x],[" (A) ...

[" Q.15"tan5x tan3x tan2x=tan x],[" (A) "tan5x-tan3x-tan2x],[" (B) "(sin5x-sin3x-sin2x)/(cos5x-cos3x-cos2x)],[" (C) "0],[" (D) None of these "]

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