If `x=log_e[cot(pi/4+theta)]` then `sin hx=`

If x = log [ cot (pi/4 + theta )] then sinh x =

If theta = (pi)/(6) and x = log [ cot (pi/(4) + theta)] , then sin h(x) =

If theta in ((-pi)/(4), (pi)/(4)) and x=log_(e )[cot((pi)/(4)+theta)] then prove that (i) cosh x= sec 2theta" " (ii) sinh x=-tan 2theta

If x=log_(e)[tan((pi)/(4)+(theta)/(2))] then cos hx=

If x=log_(e)[tan((pi)/(4)+(theta)/(2))] then cos hx=

If theta in (-(pi)/(4), (pi)/(4)) and x=log_(e ) [cot((pi)/(4)+theta)] Find Tanhx when theta=(pi)/(6)

If x=log_e tan(pi/4+theta/2) then prove that (i) tanh(x/2)=tan(theta/2) and (ii) cos theta* cos hx=1