Question 447264
rewrite tan(cos^-1v) as an algebraic expression in v.
----
Let theta be the angle whose cosine is v/1
---
Then x = v and r = 1
So, y = sqrt(1^2 - v^2)
===
Therefore tan(cos^-1(v)) 
= tan(theta) 
= y/x 
= sqrt(1-v^2)/v
===============================================================
cheers,
Stan H.
==============