## Trigonometry

Hello Everyone
I have found below online courses from Khan Academy very helpful to clear any concepts. Please refer to below links for any topic or go to Khan academy website.
Samarth
Trigonometry with right triangles
Learn the basics of trigonometry: What are sine, cosine, and tangent? How can we use them to solve for unknown sides and angles in right triangles?
Introduction to the trigonometric ratios
Solving for a side in a right triangle using the trigonometric ratios
Solving for an angle in a right triangle using the trigonometric ratios
Modeling with right triangles
Trigonometric ratios and similarity
Sine and cosine of complementary angles
Trigonometric ratios of special triangles
Introduction to the Pythagorean trigonometric iden