Are the two lines L1, through (-2,1) and (4,5) L2, through (3,0) and (0,-2) parallel ?​

Volume of a cylinder with a radius of 13 in and height of 30 in

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

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) = .