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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the value of cos(30°)?
💡 Hint: Use the Pythagorean identity.
Question 2
Easy
Write the Pythagorean identity.
💡 Hint: Think about the relationships in a right triangle.
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 is the Pythagorean identity?
- sin²A + cos²A = 1
- tan²A + cos²A = 1
- sinA + cosA = 1
💡 Hint: Recall the fundamental Pythagorean theorem.
Question 2
True or False: If sin(A) is 0.5, then cos(A) can be found with the formula cos(A) = √(1 - sin²A).
- True
- False
💡 Hint: Consider how sine and cosine relate to each other.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A right triangle has an angle A where sin(A) = 0.4. Find cos(A) and tan(A).
💡 Hint: Use the Pythagorean identity to find cos first.
Question 2
Show that if tan(A) = 3/4, then sin(A) and cos(A) can be derived from these identities.
💡 Hint: Draw a right triangle and relate the sides to sine and cosine.
Challenge and get performance evaluation