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Home › AP EAPCET (Engineering) › Mathematics › Trigonometry: Hyperbolic Functions › If e^x = 3, then cosh x equals what value?

If e^x = 3, then cosh x equals what value?

A4/3
B10/3
C5/3
D2/3
Answer & Solution
Correct answer: C. 5/3
cosh x = (3 + 1/3)/2 = (10/3)/2 = 5/3.
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