Evaluate the difference of two angles for sine

👉 Learn how to evaluate the sine of an angle in radians using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, then we use the unit circle and the Pythagoras theorem to identify the angles and obtain all the needed trigonometric function values of the angles. When we know the trigonometric function values of the two angles to be added or subtracted, we can apply the sum and difference formulas to evaluate the sine of the given angle.

Organized Videos:
✅ Sum and Difference Formulas
✅ Evaluate Sum and Difference Formulas from a Triangle
✅ Simplify an Expression using Sum and Difference Formulas
✅ Write the Expression as a single function | Sum and Difference Formulas
✅ Verify Identities using Sum and Difference Identities
✅ Evaluate Tangent using Sum and Difference Formulas
✅ Evaluate Cosine using Sum and Difference Formulas
✅ Evaluate Sine using Sum and Difference of Two Angles
✅ Solve Equations using Sum and Difference Formulas

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[tgdhsuk]

im sure 2-root6 is not the same as -root6 - root2 ....