In AXYZ, ZY=90° and ZX=62º. ZZWY=66° and XW=8.9. Find the length of ZY to
the nearest 100th.

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) = .

Is there an x intercept in the equation 60*1.15^x

Drag the tiles to the correct boxes to complete the pairs. label each function. as even , odd, or neither.