Trig Functions Visualized

Trig Visualized: One Diagram to Rule them All (six trig functions in one diagram)

In this video, we show a single diagram consisting of various triangles that connects the six primary trig functions (sine, cosine, tangent, secant, cosecant, and cotangent) to lengths of line segments created from the unit circle (circle of radius 1). We use the diagram to explain features about why tangent and secant aren't defined at pi/2 ...

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Trig Functions - Overview, Chart & Graphs - Lesson
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Trig Functions - Overview, Chart & Graphs - Lesson