" If "(tan(ln6)*tan(ln2)*tan(ln3))/(tan(ln6)-tan(ln2)-tan(ln3))=k," then the value of "k" is."

If (tan(ln6)dottan(ln2)dot"tan"(ln3))/(tan(ln6)-tan(ln2)-"tan"(ln3))=k , then the value of k is________

If (tan(ln6)dottan(ln2)dot"tan"(ln3))/(tan(ln6)-tan(ln2)-"tan"(ln3))=k , then the value of k is________

If (tan(ln6)dottan(ln2)dot"tan"(ln3))/(tan(ln6)-tan(ln2)-"tan"(ln3))=k , then the value of k is________

int(tan(ln x)tan(ln((x)/(2)))tan(ln2))/(x)dx

IF f(x)= log(tan(x/2)) , then the value of f'(x) is

If f(x)=log("tan"(x)/(2)) , then the value of f'(x) is -

For theta_(1), theta_(2), ...., theta_(n) in (0, pi/2) , if ln(sec theta_(1)-tan theta_(1))+ "ln" (sec theta_(2)-tan theta_(2))+...... +"ln" (sec theta_(n)-tan theta_(n))+"ln" pi=0 , then the value of cos((sec theta_(1)+ tan theta_(1))(sec theta_(2)+tan theta_(2))....(sec theta_(n)+tan theta_(n))) is equal to

ln a triangle ABC, B=90^@ then the value of tan(A/2)=

int(tan(1+log x))/(x) dx

int e^(ln(tan x))dx