Explore the world of trigonometry by mastering right triangles and their applications, understanding and graphing trig functions, solving problems involving non-right triangles, and …

Let's extend trigonometric ratios sine, cosine, and tangent into functions that are defined for all real numbers. You might be surprised at how we can use the behavior of those functions to …

Trigonometric ratios of complementary angles Learn Sine & cosine of complementary angles Finding trigonometric ratios of complementary angles (worked examples)

Evaluating expressions of trigonometric ratios for some special angles Get 3 of 4 questions to level up!

Practice Trigonometric ratios in right triangles Get 3 of 4 questions to level up!

Knowing trig identities is one thing, but being able to prove them takes us to another level. In this unit, we'll prove various trigonometric identities and define inverse trigonometric functions, …

You'll learn how to use trigonometric functions, their inverses, and various identities to solve and check equations and inequalities, and to model and analyze problems involving periodic …

Practice Trigonometric functions of sum and difference of angles Get 3 of 4 questions to level up!

Solving trigonometric equations having complementary angles Get 3 of 4 questions to level up!

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