sin(2x) = 2sinxcosx
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what is the formula for a vertical angle
Double angle and half angle in mathematics refer to the formulas used to express trigonometric functions of angles equal to 2a or 1/2a. These are known as the double-angle and half-angle formulas.
an angle subtended by an arc is double at the center
180 - interior angle = exterior angle
To start, try breaking down sin3x using a double angle formula. Message me if you need more help!