Relations Question 29

Question: If $ f:R\to R, $ $ g:R\to R $ and $ h:R\to R $ is such that $ f(x)=x^{2}, $ $ g(x)=\tan x $ and $ h(x)=\log x, $ then the value of $ [ho,(gof)], $ if $ x=\frac{\sqrt{\pi }}{2} $ will be

Solution:

Answer: 0