Cosine & ArcCosine in a Right Triangle

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

Get More Help!

Click one of these links to get more help from another Cramlet in this same chapter:

• Soh-Cah-Toa and Trigonometry Functions
• Non-Right Triangles Study Sheet
• Angle Functions Quiz
• My Angle Functions Flashcards
• Tangent & ArcTangent in a Right Triangle
• Tangent Function in a Right Triangle
• Sine & ArcSine in a Right Triangle
• Sine Function in a Right Triangle
• Secant Function in a Right Triangle
• Radians
• Law of Sines Ambiguous Case
• Law of Sines
• Law of Cosines
• Cotangent Function in a Right Triangle
• Cosine & ArcCosine in a Right Triangle
• Cosine Function in a Right Triangle
• Cosecant Function in a Right Triangle
• Area of a Triangle Using Sine