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Rationalizing Denominators

0. Review of College Algebra

Rationalize the denominator.&nbsp;﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mo>−</mo><mfrac><mn>5</mn><mrow><mn>2</mn><msqrt><mn>7</mn></msqrt></mrow></mfrac></mrow><annotation encoding="application/x-tex">-\frac{5}{2\sqrt7}</annotation></semantics></math>−27<svg width="400em" height="1.08em" viewBox="0 0 400000 1080" preserveAspectRatio="xMinYMin slice"><path d="M95,702
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Rationalize the denominator. ﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mfrac><mrow><mn>6</mn><mo>+</mo><msqrt><mi>x</mi></msqrt></mrow><mrow><mo>−</mo><msqrt><mi>x</mi></msqrt></mrow></mfrac></mrow><annotation encoding="application/x-tex">\frac{6+\sqrt{x}}{-\sqrt{x}}</annotation></semantics></math>−x<svg width="400em" height="1.08em" viewBox="0 0 400000 1080" preserveAspectRatio="xMinYMin slice"><path d="M95,702
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c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54
c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10
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c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10
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c5.3,-9.3,12,-14,20,-14
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2. Trigonometric Functions on Right Triangles

Trigonometric Functions on Right Triangles

5. Inverse Trigonometric Functions and Basic Trigonometric Equations

Inverse Sine, Cosine, & Tangent

6. Trigonometric Identities and More Equations

Introduction to Trigonometric Identities

8. Vectors

Geometric Vectors

7. Non-Right Triangles

Law of Sines

Angles, identities, and trig functions giving you trouble? Trigonometry is explained step-by-step so solving problems feels more approachable.

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