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AP EAMCET · Maths · Inverse Trigonometric Functions

If \(\operatorname{Sinh}^{-1}(2)+\operatorname{Sinh}^{-1}(3)=\alpha\) then \(\sinh \alpha=\)

  1. A \(2 \sqrt{5}+3 \sqrt{10}\)
  2. B \(2 \sqrt{10}+4 \sqrt{5}\)
  3. C \(3 \sqrt{10}+4 \sqrt{5}\)
  4. D \(2 \sqrt{10}+3 \sqrt{5}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(2 \sqrt{10}+3 \sqrt{5}\)

Step-by-step Solution

Detailed explanation

\(\operatorname{Sinh}^{-1}(x)+\operatorname{Sinh}^{-1}(y)=\operatorname{Sinh}^{-1}(x \sqrt{1+y^2}+y \sqrt{1+x^2})\) \(\alpha = \operatorname{Sinh}^{-1}(2 \sqrt{1+3^2}+3 \sqrt{1+2^2})\) \(\sinh \alpha = 2 \sqrt{10}+3 \sqrt{5}\)