Law of Sines – Basic Introduction

This trigonometry & precalculus video provides a basic introduction into the law of sines formula. It explains how to use that formula to find the missing sides and missing angles of a triangle.

Trigonometry – Free Formula Sheet: https://www.video-tutor.net/formula-sheets.html

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Solving Trig Equations – Finding All Solutions:

Solving Trig Equations with Multiple Angles:

Solving Trig Equations with Double Angles:

More Examples – Law of Sines:

Area of an Oblique Triangle:

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The Height of a Triangle – Heron’s Formula:

Law of Cosines:

Polar Coordinates:

Polar Equations to Rectangular Equations:

Rectangular Equations to Polar Equations:

How To Graph Polar Equations:

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Complex Numbers – De Moivre’s Theorem:

Dot Product of Two Vectors:

Trigonometry Final Exam Review:

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