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November 9th, 2008, 04:59 PM  #1 
Newbie Joined: Sep 2008 Posts: 7 Thanks: 0  2 quick inverse Trig questions
I just got a math worksheet today on inverse trig functions... i just have a quick question on how to word my answer. The 2 Problems sin^1[sin (3pi/4)] cos^1[cos(pi/3)] I know that the inverse sin and inverse cos functions have domains... Doesn't the quantities of the brackets fall outside of the domain of the graphs??? I am wondering how I would write the answer to my teacher? Would I put N/A, Falls outside range, ETC. I don't know what to put... Also one of my problems says to simplify tan(cos^1 2x) How in the world would I do that? THANKS FOR ALL HELP 
November 11th, 2008, 08:53 AM  #2  
Global Moderator Joined: Dec 2006 Posts: 21,036 Thanks: 2274  Quote:
Quote:
 
November 11th, 2008, 09:19 AM  #3 
Senior Member Joined: Mar 2007 Posts: 428 Thanks: 0  Re: 2 quick inverse Trig questions
#1. The quantities inside are just numbers. The inverse function might restrict the number of results of the angle whose cosine is that number, for example. HINT #2: [attachment=0:1yv5fiwd]Image1.jpg[/attachment:1yv5fiwd] 

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