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1-24 of 35 results for Materials Authored by Rudy Lopes

This person, more than any other mathematician, has helped countless students learn basic trigonometric functions. So who... see more

What are complex numbers, and what's up with this imaginary number i? Use this Tab Tutor Series program to learn about... see more

Take this self-quiz to review angle functions terms and concepts like sine, cosine, and tangent.

How do you figure out the area of a triangle if you only know two sides and the angle between them? This formula solver... see more

With this Bottomless Worksheet you can get endless practice on adding complex numbers (numbers including the imaginary... see more

Get endless practice right here in dividing complex numbers! At the click of a button, this Bottomless Worksheet... see more

This Bottomless Worksheet is a great way to practice multiplying complex numbers by real numbers and each other. At the... see more

Get endless practice on subtracting complex numbers (numbers including the imaginary number i) with this Bottomless... see more

Use this printable study sheet to review or learn the techniques for working with complex numbers and the imaginary... see more

A conic section is a curve formed by the intersection of a cone with a plane. Use this printable study sheet to review or... see more

Use this Formula Solver! Series program to learn how to calculate the cosecant of an angle. It's great for checking your... see more

Explore how to use cosine and arccosine in a triangle using this Formula Solver! Series program. Use it to check your... see more

Review how the basic concept of the cosine function works, using this Formula Solver! Series program. Use it to check... see more

Use this Formula Solver! Series program to learn how to calculate the cotangent of an angle. It's great for checking your... see more

What are complex numbers, and how do you divide them? Use this Tab Tutor Series program to learn about complex numbers... see more

This Tab Tutor program will show you how to find the equation of a circle from its center and radius, and the radius and... see more

With this Tab Tutor program, you'll learn about the equation of a horizontal ellipse and how to use it to derive the... see more

Learn about the equation of a horizontal hyperbola with this Tab Tutor program. With step-by-step instruction and an... see more

A parabola is the set of points that are equally distant from the focus point and the directrix. This Tab Tutor program... see more

With this Tab Tutor program, you'll learn about the equation of a vertical ellipse and how to use it to derive the foci,... see more

Learn about the equation of a vertical hyperbola with this Tab Tutor program. With step-by-step instruction and an... see more

The Law of Cosines describes fundamental properties of triangles. Use this Formula Solver! Series program to learn how it... see more

The Law of Sines describes fundamental properties of triangles. Use this Formula Solver! Series program to learn how it... see more

Explore the ambiguous case of the Law of Sines using this Formula Solver! Series program. Use it to check your homework... see more