L Lukybear Active Member Joined May 6, 2008 Messages 1,466 Gender Male HSC 2010 Apr 4, 2010 #1 Trig Rules dose not cover (pi/2 + theta) does it? Like cos (pi/2 + theta) = sin (theta)
ilikebeeef Active Member Joined Nov 5, 2009 Messages 1,198 Location Hoboland and Procrastinationland Gender Undisclosed HSC 2010 Apr 4, 2010 #2 Lukybear said: Trig Rules dose not cover (pi/2 + theta) does it? Like cos (pi/2 + theta) = sin (theta) Click to expand... Yes it does.
Lukybear said: Trig Rules dose not cover (pi/2 + theta) does it? Like cos (pi/2 + theta) = sin (theta) Click to expand... Yes it does.
Trebla Administrator Administrator Joined Feb 16, 2005 Messages 8,402 Gender Male HSC 2006 Apr 4, 2010 #3 You don't have to remember them. They're easy to prove by compound angle expansion.
