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[" Find the value of "],[[" (a) "sin(pi)/(10)+sin(13 pi)/(10)," (b) "cos^(2)48^(@)-sin^(2)12^(@)]]

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Find the value of (a) sin(pi)/(10).sin(13pi)/(10) (b) cos^(2)48^(@)-sin^(2) 12^(@)

Find the value of (a) sin(pi)/(10)+sin(13pi)/(10) (b) cos^(2)48^(@)=sin^(2) 12^(@)

sin((pi)/(10))sin((3pi)/(10))=?

sin(pi/10)sin((13pi)/10)=

sin ((pi) / (10)) sin ((3 pi) / (10))

The value of sin (pi)/(10) sin (13 pi)/(10) is

The value of sin((pi)/(10))sin((13 pi)/(10)) is

The value of sin""(pi)/(10)sin""(13pi)/(10) is

The value of sin""(pi)/(10)sin""(13pi)/(10) is

The value of sin""(pi)/(10)sin""(13pi)/(10) is