(cosh x/1- tanh x)+(sinh x/ 1- coth x)=

(cosh x+ sinh x)ⁿ=

If tan A= tan α tan β= cot α tanh β, then tan(A+B)=

If 2 Sinh^-1 (a/√(1-a²))= log(1+x/1-x), then x=

If sinh 9- k sinh k=(k+1)sinh³ k,then k=

If Sinh^-1 √3= log(sec θ+tan θ), then θ=

If z= x+iy such that cos z= 2, then z=

(tan hx/ Sechx-1)+ (sinh x/ sech x+1)

If A= Tanh^-1 (1/2)+ Coth^-1(2), B= sinh(Cosh^-1 9), C= sech²(Tanh^-1 1/2)+cosech²(Coth^-1 3) then

If cosh x= sec θ, then tanh² x/2=