AP EAMCET Engineering 22 Sep 2020 Shift 2 Paper

Section: Mathematics
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Question : 23 of 160
 
Marks: +1, -0
If f(x) = |
cos(x+a+b)sin(x+a+b)10
cos(x+b+c)sin(x+b+c)10
cos(x+c+a)sin(x+c+a)10
|
, then f(2019)f(2020) - f(2020)f(2019) =
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