By A Mystery Man Writer
Consider that -90° corresponds to 270° (the minus sign is to turn clockwise instead of counter-clockwise): so: sin(-90°)=sin(270°)=-1
SOLVED: Prove that sin(theta) cos(90 degrees - theta) cos(theta) / sin(90 degrees - theta) + cos(theta) sin(90 degrees - theta) sin(theta) / cos(90 degrees - theta) is equal to 1.
Man thinking what is sin 90 degrees Stock Photo by ©fxquadro 20255579
Man thinking what is sin 90 degrees Stock Photo by ©fxquadro 20255579
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Man thinking what is sin 90 degrees Stock Photo by ©fxquadro 20255579
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