If line BC is the diameter of the circle below, what is the area of the circle? 36π square units 16π square units 9π square units 64π square units

Which statements regarding the diagram are true? check all that apply.

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

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) = .