Determine the radius of the yaw mark made when brakes are immediately applied to avoid a collision based upon a yaw mark chord measuring 59.9 feet and middle ordinate measuring 6 feet. Round your answer to the nearest tenth.

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Find the distance between (7,-6) and (-3,-9)