A question that's infinitely funny...

[Daniel15]

Saw this question whilst going through my notes... I found it quite humourous (just think about it for a sec, and you'll see why):
Using a compound angle formula, simplify tan(π/2 + x)
(π is pi, in case it doesn't appear properly for you )

Edit: Typed up the working in OpenOffice's equation editor, here you go:

Interesting, to say the least. Talking ∞/∞ out as a common factor?  :lol:  :lol:

[Ahmad]

Erm. You're dealing with infinities really weirdly. You can't cancel infinities arbitrarily ^^

Avoiding limits:
tan(pi/2 + x) = sin(x + pi/2)/cos(x + pi/2) = cos(x)/(-sin(x)) = -cot(x)

[Daniel15]

Erm. You're dealing with infinities really weirdly. You can't cancel infinities arbitrarily ^^

I know that, that's why I found it really funny  :lol:  :lol:

I posted this because it was exactly what I saw in my bound reference thingy . Anyone with the "Specialist Mathematics Units 3+4 Bound Notes" book by Pearson Education, it's on page 20. I don't have a working scanner at the moment so can't scan it in, but it's exactly as I posted above.

[fredrick]

am i suppose to know any of that?? or is that covered in units 3/4

[Collin Li]

am i suppose to know any of that?? or is that covered in units 3/4

Nah, this whole thread is mathematically incorrect anyway. Disregard it.

[Daniel15]

Yeah, exactly what coblin said. :p
I only posted it because I found it really funny  :2funny:

[fredrick]

i find it funny too  l0l