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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the Law of Cosines formula?
💡 Hint: Remember, it's about one side and the cosine of the included angle.
Question 2
Easy
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.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the Law of Cosines relate?
- Lengths of sides to angles
- Angles to area
- Angles in a triangle only
💡 Hint: Consider what is involved with side lengths.
Question 2
True or False: The Law of Cosines can only be used for right triangles.
- True
- False
💡 Hint: Think about the types of triangles you've learned!
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
Question 2
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!
Challenge and get performance evaluation