JEE Advanced 2026Paper 1
- Exam
- JEE Advanced
- Year
- 2026
- Paper
- Paper 1
- Subject
- Mathematics
- Chapter
- Inverse Trigonometric Functions
JEE Advanced 2026 · Paper 1 · Mathematics · Inverse Trigonometric Functions
Considering only the principal values of the inverse trigonometric...
Considering only the principal values of the inverse trigonometric functions, the value of
is
is
Options
- A
- B
- C
- D
Correct answer
C.
Step-by-step solution
For the first term, :
The principal value branch of is .
Since the cotangent function is periodic with period , .
Using , we have , so , which lies in the interval .
Thus, .
For the second term, :
Since , we get:
.
For the third term, :
Let .
Using the multiple angle formula , we obtain:
.
Therefore, .
Adding the three evaluated terms together:
.
Answer:
The principal value branch of is .
Since the cotangent function is periodic with period , .
Using , we have , so , which lies in the interval .
Thus, .
For the second term, :
Since , we get:
.
For the third term, :
Let .
Using the multiple angle formula , we obtain:
.
Therefore, .
Adding the three evaluated terms together:
.
Answer: