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TS EAMCET · Maths · Inverse Trigonometric Functions

Consider the following statements
Statement-I: \(\operatorname{Cosh}^{-1} x=\operatorname{Tanh}^{-1} x\) has no solution
Statement-II: \(\operatorname{Cosh}^{-1} x=\operatorname{Coth}^{-1} x\) has only one solution
The correct answer is

  1. A Both statements I and II are true
  2. B Both statements I and II are false
  3. C Statement I is true, but statement II is false
  4. D Statement I is false, but statement II is true
Verified Solution

Answer & Solution

Correct Answer

(A) Both statements I and II are true

Step-by-step Solution

Detailed explanation

For Statement-I: \(\operatorname{Cosh}^{-1} x=\operatorname{Tanh}^{-1} x\) Domain of \(\operatorname{Cosh}^{-1} x\) is \([1, \infty)\). Domain of \(\operatorname{Tanh}^{-1} x\) is \((-1, 1)\). Intersection of domains is empty. Thus, no solution exists. Statement-I is true. For…