# Exam Question for Class 12 Mathematics Chapter 2 Inverse Trigonometric Functions

Please refer to below Exam Question for Class 12 Mathematics Chapter 2 Inverse Trigonometric Functions. These questions and answers have been prepared by expert Class 12 Mathematics teachers based on the latest NCERT Book for Class 12 Mathematics and examination guidelines issued by CBSE, NCERT, and KVS. We have provided Class 12 Mathematics exam questions for all chapters in your textbooks. You will be able to easily learn problems and solutions which are expected to come in the upcoming class tests and exams for standard 10th.

## Chapter 2 Inverse Trigonometric Functions Class 12 Mathematics Exam Question

All questions and answers provided below for Exam Question Class 12 Mathematics Chapter 2 Inverse Trigonometric Functions are very important and should be revised daily.

Exam Question Class 12 Mathematics Chapter 2 Inverse Trigonometric Functions

Question.

Question. Write the principal value of

Question. Using principal values, write the value of

Question.

Question. Write the principal value of

Question.

Question. Using principal value, nd the value of

Question. If tan−1 (√3) + cot−1 (x) = π/2, then find x.

Question.

Question. Write the principal value of

Question. Find the principal value of

Question. Write the principal value of tan−1 (√3)− cot−1 (−√3)

Question.

Answer. We know that, sin–1(sin x) = x

Question.

Question.

Question. Find the value of the following :

Question. If cos(tan-1 x + cot-1 √3) = 0 then the value of x is ………
cos(tan-1 x + cot-1 √3) = 0

Question. The set of values of sec-1 1/2 is ……… .
Since, domain of sec-1 x is R – (-1, 1).

Question. The value of cos(sin-1 x + cos-1 x) where |x| ≤ 1, is ……… .

Question.

Question. The value of cot-1 (-x ) x ∈ R in terms of cot-1 x is ……… .

Question.

Question.

Question.

Question. If 2tan-1 (cos θ) tan-1 (2cosec θ) then show that θ = π/4, where n is any integer.
• Thinking Process

Question.

Question.

Question. Prove that

Question. Prove that :

Question. Prove that

Question. Solve for x : 2 tan–1(cos x) = tan–1(2cosec x)
Answer. tan–1(cos x) = tan–1(2cosec x)
⇒ 2 tan–1 (cosx) – tan–1 (2cosecx) = 0

Question. Prove that

Question. Solve the equation for x :
sin–1x + sin–1(1–x) = cos–1x

⇒ sin–1 x + sin–1 x = cos–1(1− x)
⇒ 2sin–1x = cos–1(1–x) ⇒ cos(2sin–1x) = (1 – x)
⇒ 1 – 2 sin2(sin–1 x) = (1 – x) ⇒ 2sin2 (sin–1 x) = x
⇒ 2x2 = x ⇒ 2x2 – x = 0 ⇒ x (2x –1) = 0
⇒ x = 0 or 2x – 1 = 0 ⇒ x = 0 or x = 1/2

Question.

Question. Solve for x :

Question. Prove that :

Question. If sin [cot–1 (x + 1)] = cos (tan–1 x), then find x.
Answer. We have, sin[cot–1 (x + 1)] = cos (tan–1x)                    … (1)
Let cot–1 (x + 1) = A and tan–1 x = B

Question. If (tan–1x)2 +(cot−1x)2 = 5π2/8 then find x.

Question. Prove the following:

Question. Solve for x :
tan−1 (x + 1) + tan−1 (x – 1) = tan−1 8/31
Answer. We have, tan−1 (x + 1) + tan−1 (x – 1) = tan−1 8/31

Question.

Question. Solve for x : tan−1(2 ) + tan−1(3x) = π/4
Answer. We have, tan−1(2 ) + tan−1(3x) = π/4

Question.

Question. Prove that

Question. Solve for x :

Question. Prove that

Question. Prove that

Answer. Putting x = cos θ, we get

Question. Solve for x : tan−1 x + 2cot−1 x = 2π/3

Question. Prove that :

Question. Find the value of the following :

Question. Prove that :

Question. Show that:

Question. Prove the following

Question. Prove that :

Question. Prove that :

Question. Prove that :

Question. Prove that :

Question. Write into the simplest form:

Question. Prove that :

Question.

Question.

Question.

Question. If a1, a2, a3, …, an is an arithmetic progression with common difference d, then evaluate the following expression.