AP EAMCET · Maths · Trigonometric Ratios & Identities
The value of is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Putting the value of tanhx in terms of ex we get, 1+tanhx1−tanhx =1+ex−e−xex+e−x1−ex−e−xex+e−x =ex+e−x+ex−e−xex+e−x−ex+e−x =2ex2e−x = e 2x .
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