JEE Main 2021 — Inverse Trigonometric Functions Question with Solution
From: JEE Main 2021 (Online) 17th March Morning Shift
Question
The sum of possible values of x for
tan1(x + 1) + cot1 = tan1 is :
tan1(x + 1) + cot1 = tan1 is :
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
tan1(x + 1) + cot1 = tan1
tan1(x + 1) + tan1(x - 1) = tan1
= tan1
but at
and
So, only solution is x = 8 =
tan1(x + 1) + tan1(x - 1) = tan1
= tan1
but at
and
So, only solution is x = 8 =
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