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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(90° - 30°)?
💡 Hint: Remember that cos(90° - θ) = sin θ.
Question 2
Easy
If sin θ = 0.6, what is cos(90° - θ)?
💡 Hint: Use the complementary angle theorem.
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 sin(90° – θ) equal to?
- cos θ
- tan θ
- cot θ
💡 Hint: Think about how sine and cosine relate with complementary angles.
Question 2
True or False: tan(90° – θ) = cot θ.
- True
- False
💡 Hint: Recall the definition of tangent and cotangent.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If sin θ = 4/5, calculate cos(90° – θ) and tan(90° – θ).
💡 Hint: Use the relationship to find additional trig values.
Question 2
Prove the identity sin² θ + cos² θ = 1 using the complementary angle theorem.
💡 Hint: Think about how sine and cosine relate to one another when squared.
Challenge and get performance evaluation