17. [10.55 Points] SCALCETB 8.1.044. ASK YOUR TEACHER PRACTICE ANOTHER Consider the following. -b 0| b x | (a) The gure shows a telephone wire hanging between two poles atx = b and x = b. It takes the shape of a catenary with the equation y = c + a cosh(x/a). Find the length of the wire. (b) Suppose two telephone poles are 60 ft apart and the length of the wire between the poles is 61 ft. If the lowest point of the wire must be 19 ft above the ground, how high up on each pole should the wire be attached? (Round your answer to two decimal places.) ft Need Help