# Soh-Cah-Toa and Trigonometry Functions

This person, more than any other mathemetician, has helped countless students learn basic trigonometric functions. So who exactly is this Soh-Cah-Toa? Continue reading

This person, more than any other mathemetician, has helped countless students learn basic trigonometric functions. So who exactly is this Soh-Cah-Toa? Continue reading

Use this Smartacus Study Sheet to learn how to find sides and angles in non-right triangles (also known as oblique triangles). An important resource for your trigonometry class, it also prints for easy reference. Continue reading

Use these flash cards to practice your grasp of sine, cosine, tangent, and dozens of other angle functions terms. Continue reading

The Law of Cosines describes fundamental properties of triangles. Use this Formula Solver! Series program to learn how it works (and to check your homework answers, too!) Continue reading

Review how the basic concept of the cosine function works, using this Formula Solver! Series program. Use it to check your homework answers too! Continue reading

Explore how to use cosine and arccosine in a triangle using this Formula Solver! Series program. Use it to check your homework answers too! Continue reading

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

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