NCERT Based MCQs on Inverse Trigonometry with Answers
NCERT Based MCQs on Inverse Trigonometry with Answers
Class: CBSE Class 12 Mathematics
Subject: Mathematics
Section: Inverse Trigonometric Functions
Topic: NCERT Based MCQs on Inverse Trigonometry
Board: CBSE Board Examinations
Subject: Mathematics
Section: Inverse Trigonometric Functions
Topic: NCERT Based MCQs on Inverse Trigonometry
Board: CBSE Board Examinations
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 12 Board Examination standard practice.
Q1. Domain of sin⁻¹x is:
Answer: B
Explanation: Since sine values lie between −1 and 1, inverse sine accepts only this interval.
Explanation: Since sine values lie between −1 and 1, inverse sine accepts only this interval.
Q2. Range of cos⁻¹x is:
Answer: A
Explanation: Principal value branch of cosine inverse lies between 0 and π.
Explanation: Principal value branch of cosine inverse lies between 0 and π.
Q3. sin⁻¹(0) equals:
Answer: C
Explanation: sin 0 = 0, so inverse returns 0.
Explanation: sin 0 = 0, so inverse returns 0.
Q4. cos⁻¹(0) equals:
Answer: B
Explanation: Cosine becomes zero at π/2 in principal branch.
Explanation: Cosine becomes zero at π/2 in principal branch.
Q5. tan⁻¹(1) equals:
Answer: B
Explanation: tan π/4 = 1.
Explanation: tan π/4 = 1.
Q6. sin(sin⁻¹x) =
Answer: A
Explanation: Function and inverse cancel within domain.
Explanation: Function and inverse cancel within domain.
Q7. cos(cos⁻¹x) =
Answer: A
Explanation: Direct inverse identity.
Explanation: Direct inverse identity.
Q8. tan(tan⁻¹x) =
Answer: A
Explanation: Tangent and its inverse cancel.
Explanation: Tangent and its inverse cancel.
Q9. sin⁻¹(1) equals:
Answer: B
Explanation: Maximum principal sine value.
Explanation: Maximum principal sine value.
Q10. cos⁻¹(1) equals:
Answer: A
Explanation: cos 0 = 1.
Explanation: cos 0 = 1.
Q11. sin⁻¹(−1) =
Answer: A
Explanation: Lower bound of principal branch.
Explanation: Lower bound of principal branch.
Q12. tan⁻¹(0) =
Answer: A
Explanation: tan 0 = 0.
Explanation: tan 0 = 0.
Q13. sin⁻¹x + cos⁻¹x =
Answer: A
Explanation: Complementary identity.
Explanation: Complementary identity.
Q14. tan⁻¹x + cot⁻¹x =
Answer: π/2
Explanation: Standard inverse identity.
Explanation: Standard inverse identity.
Q15. Range of tan⁻¹x:
Answer: A
Explanation: Endpoints excluded.
Explanation: Endpoints excluded.
Q16. cos⁻¹(−1) =
Answer: C
Explanation: Cosine minimum principal value.
Explanation: Cosine minimum principal value.
Q17. sin⁻¹(1/2) =
Answer: π/6
Explanation: sin π/6 = 1/2.
Explanation: sin π/6 = 1/2.
Q18. cos⁻¹(1/2) =
Answer: π/3
Explanation: cos π/3 = 1/2.
Explanation: cos π/3 = 1/2.
Q19. cot⁻¹(1) =
Answer: π/4
Explanation: cot π/4 = 1.
Explanation: cot π/4 = 1.
Q20. Inverse trig functions are made single‑valued by:
Answer: A
Explanation: Restricting domain ensures one‑one nature.
Explanation: Restricting domain ensures one‑one nature.