\(\text{Express }\tan^2({\cos^{-1}\dfrac{1}{x}}) \text{ without trig functions and in terms of x.}\\\text{PS: Please do not give me a lump of clumsy infinite series.}\\ \text{I will throw it into a cylindrical object with a lid. XD}\)
=(1-1/x^2) x^2
Why no one have asked me what is that cylindrical object with a lid? It's a void rubbish bin xDDDD
WELL wrong one. Why would I have to reply to Guest #1 XD. I meant to make a new answer zone.
x^2 - 1.
LOL good job Guest #2
+9673 
