Practice - Law of Cosines
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Practice Questions
Test your understanding with targeted questions
What is the Law of Cosines formula?
💡 Hint: Remember, it's about one side and the cosine of the included angle.
If a = 3, b = 4, and angle A = 60°, find side c using the Law of Cosines.
💡 Hint: Substitute values carefully into the cosine formula.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the Law of Cosines relate?
💡 Hint: Consider what is involved with side lengths.
True or False: The Law of Cosines can only be used for right triangles.
💡 Hint: Think about the types of triangles you've learned!
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Challenge Problems
Push your limits with advanced challenges
A triangle has sides of lengths a = 11, b = 24 and c = 30. Calculate the angle opposite side a.
💡 Hint: Carefully input side lengths into the formula.
You have a triangle with side lengths 6, 8, and 10. Determine if the triangle is acute, right or obtuse.
💡 Hint: Check for each angle using the sides!
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Reference links
Supplementary resources to enhance your learning experience.