2 205021 New Member Joined May 23, 2009 Messages 13 Gender Male HSC 2010 Mar 1, 2010 #1 Hey, I'm really struggling with this stuff, so theres probably more to come. Prove: tan (θ + π/4) tan (θ - π/4) = -1
Hey, I'm really struggling with this stuff, so theres probably more to come. Prove: tan (θ + π/4) tan (θ - π/4) = -1
2 205021 New Member Joined May 23, 2009 Messages 13 Gender Male HSC 2010 Mar 1, 2010 #3 philly2000 said: Click to expand... thanks for that. just a question, how did you get from line 2 to line 3? edit: nah i got it. got pi confused, thought it equalled 90 degrees. Last edited: Mar 1, 2010
philly2000 said: Click to expand... thanks for that. just a question, how did you get from line 2 to line 3? edit: nah i got it. got pi confused, thought it equalled 90 degrees.
2 205021 New Member Joined May 23, 2009 Messages 13 Gender Male HSC 2010 Mar 2, 2010 #4 And I hold true to my word. this one please: Simplify: 2cos^(2)3x - 1 where x = 2pi/9 thanks!