Solve a trigonometric equation with the sum and difference formulas for sine

👉 Learn how to solve equations using the angles sum and difference identities. Using the angles sum and difference identities, we are able to expand the trigonometric expressions, thereby obtaining the values of the non-variable terms. The variable terms are easily simplified by combining like terms and solving for x. To solve for x we will need to isolate the trigonometric functions and apply inverse trigonometric functions and the unit circle to solve. The appropriate range is applied to get the required value of x.

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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[aakashkarajgikar]

Thank you for making this video. I am off to learning Trigonometry now.

[kon]

Thank you, very much I wish you have been one of my math teacher.

[woodscruff]

Thank you for these videos! missing a couple of days of class really sucks and these helped me to be able to catch up between these videos and my book.