Discover more at www.ck12.org: [ Ссылка ]

Here you'll learn that the sides of a 30-60-90 right triangle are in the ratio x:x \sqrt{3}:2x.

This video provides the student with a walkthrough on 30-60-90 triangles.

This is part of CK-12’s Basic Geometry: Right Triangle Trigonometry. See more at:

1. Expressions with Radicals:
[ Ссылка ]

2. Pythagorean Theorem and Pythagorean Triples:
[ Ссылка ]

3. Applications of the Pythagorean Theorem:
[ Ссылка ]

4. Inscribed Similar Triangles:
[ Ссылка ]

5. 45-45-90 Right Triangles:
[ Ссылка ]

6. 30-60-90 Right Triangles:
[ Ссылка ]

7. Sine, Cosine, Tangent:
[ Ссылка ]

8. Trigonometric Ratios with a Calculator:
[ Ссылка ]

9. Trigonometry Word Problems:
[ Ссылка ]

10. Inverse Trigonometric Ratios:
[ Ссылка ]

Watch the whole series of CK-12's Basic Geometry videos: [ Ссылка ]

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