Pre-Calculus - Using the Double Angle Formula for Sine Evaluate for Your Angle

👉 Learn how to evaluate the double angle of sine. The value of the sine of double a given angle can be obtained given the value of the sine of the angle. The value of the sine of double a given angle is obtained using the formula sin(2u) = 2(sin u)(cos u).

Thus, given the value of the sine of an angle, to obtain the value of the sine of double the angle, we first use the Pythagoras theorem to obtain the value of the cosine of the given angle. Then the value of the sine of double the given angle is given by the product of the cosine of the given angle and twice the sine of the given angle.

Organized Videos:
✅ Double Angle Formulas
✅ Evaluate Double Angle Formulas from a Triangle
✅ Solve Equations using Double Angle Formulas

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