Evaluate Sine, Cosine, Tangent with Double Angle Formulas

Learn to evaluate sine, cosine, and tangent using double angle formulas in this 27-minute video tutorial. Master techniques for rewriting expressions as double angles, proving trigonometric identities, and solving problems involving triangles. Practice evaluating cos(2u), sin2x, cos2x, and tangent problems using double angle formulas. Explore the application of co-functions and gain a comprehensive understanding of trigonometric identities, including addition, subtraction, double, and half-angle formulas for sine, cosine, and tangent. Aligned with Georgia Math Standard MGSE9-12.F.TF.9, this tutorial provides essential knowledge for mastering trigonometric concepts and problem-solving skills.

Rewrite as a double angle to prove sin 2(30) not equal 2sin 30.
Evaluate: cos(2u) = cos squared u - sin squared u.
Evaluate tangent problem.
Using double angles with triangles.
Evaluate double angles sin2x cos2x.
Evaluate given co-functions.