Which expression gives the vertical distance y from the lowest point of a catenary to a point on the cable?

• A. y = To/wo * [cosh(wox/To) - 1]
• B. y = To/wo * [cosh(wox/To) + 1]
• C. y = To/wo * [sinh(wox/To) - 1]
• D. y = wo/To * [cosh(wox/To) - 1]

Answer: (A)