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[sin47^(@)+sin61^(@)-sin11^(@)-sin25^(@)...

[sin47^(@)+sin61^(@)-sin11^(@)-sin25^(@)=],[[" (1) "sin36^(@)," (2) "sin7^(@)],[" (3) "cos36^(@)," (4) "cos7^(@)]]

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sin65^(@)+sin25^(@)=

sin47^(@)-sin25^(@)+sin61^(@)-sin11^(@)=

sin 47^@ + sin 61^@- sin 11^@- sin 25^@ =

Prove that sin47^(@)+sin61^(@)-sin11^(@)-sin25^(@)=cos7^(@) .

Show that sin47^(@)+sin61^(@)-sin11^(@)-sin25^(@)=cos7^(@)

sin47^(@)+cos77^(@)=cos17^(@)

Value of sin 47^(@) + sin 61^(@)- sin 11 ^(@)-sin 25 ^(@) is

sin 47^(@) - sin 25^(@) + sin 61^(@) - sin 11^(@) =

sin25^(@)cos65^(@)+cos25^(@)sin65^(@)