Using sin(A+B) = sinAcosB + cosAsinB
sin20cos40 + cos20sin40 = sin(20+40) = sin60degree
=
sin20cos40 + cos20sin40 = sin(20+40) = sin60degree
=
Triangle ABC is shown with four images that are each the result of a transformation of triangle ABC. On a coordinate plane, tria
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Here is the solution. Hope it helps.
