How many triangles can be constructed with three sides measuring 11 meters, 16 meters, and 26 meters?

a) more than one

b) one

c) none

Acircle has a circumference of 28.36 units what is the diameter of the circle

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29

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) = .