- 15 Jan '05 23:31

wtf??? ... and I felt bad because I messed up my physics exam on thursday (that is, really messed it up as in nearly every question wrong...). Did you get the right answer in the exam, btw?*Originally posted by genius***tricky little trig problem that i found today. that is, it was in my exam...woo...**

show that tan(3x) = (3*tan(x)-tan(x)^3)/(1-3*(tan(x)^2)

Angie

PS: I hate physics... and I have a maths exam on tuesday, so I'll just ask you if I have questions beforehand - 16 Jan '05 00:31 / 1 edit

Use the formula for tan(A+B) ( (tanA + tanB)/(1-tanAtanB) or something) and turn the handle - standard Higher/A-Level question.*Originally posted by genius***tricky little trig problem that i found today. that is, it was in my exam...woo...**

show that tan(3x) = (3*tan(x)-tan(x)^3)/(1-3*(tan(x)^2)