A. cosh nx+ sinh nx
B. tanh nx6coth nx
C. coth nx+sech nx
D. sinh nx+cosech nx
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=
log(x-1+√(x2-2x)(x≥2) is equal to
2 cosh 3 cosh 5=