Special Triangles & Trig Ratios • [2.1c] Pre-Calculus 11

Learn about the two 'special triangles', 45-45-90 and 30-60-90, see how to create them from a square and equilateral triangle, and use them to generate exact value trig ratio fractions for sine, cosine, and tangent of 30, 45, and 60 degrees. My instructional approach emphasizes conceptual understanding of and connections between concepts and ideas, rather than just pure memorization.

Corresponds to chapter 2, section 2.1 in McGraw-Hill's Pre-Calculus 11, but also fits with the trigonometry unit from almost any other Pre-Calculus course or textbook.

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[anyayah]

You are a lifesaver, u made learning this so easy i cannot thank you enough