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Help? D: How do you determine the exact trigonometric ratio of tan 5pi/12?
 one year ago
 one year ago
Help? D: How do you determine the exact trigonometric ratio of tan 5pi/12?
 one year ago
 one year ago

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eyust707Best ResponseYou've already chosen the best response.1
well 5/12 = 3/12 + 2/12 right?
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
and 3/12 is 1/4 2/12 is 1/6
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
I understand that far.. Kind of
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
sweet so that means that: \[\tan ({5\pi \over 12} )= \tan ({3\pi \over 12} + {2\pi \over 12}) = \tan ({\pi \over 4} + {\pi \over 6})\]
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
That makes sense so far, it's usually what follows that ends up looking like Chinese. >.<
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
Well then you can use an identity...
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
the bottom one should work
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
Do you mind showing me how it would work out?.. >.< Sorry
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
No its fine =) as long as you help me
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
what would you use for u?
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
so u can be 1/4 and v can be 1/6
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
Yep! make sure you use (1/4)* pi\[\tan ({\pi \over 4} + {\pi \over 6})\]
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
u = \(\pi \over 4\) v = \(\pi \over 6\)
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
we end up withdw:1354678186124:dw
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
tan(pi/4) = 1 tan(pi/6) = 1/sqrt(3)
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
Makes sense so far.
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
then substitute those numbers in
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
dw:1354678373033:dw
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
wait a minute.. something is isn't quite right
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
Erm, make the fractions rational?
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
the bottom + should actually be a 
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
dw:1354678613665:dw
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
OOOH. Right. Ohgawd. I'm so not ready for my test. lol
 one year ago

eyust707Best ResponseYou've already chosen the best response.1
@satellite73 whats the best way to simplify this?
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
Lol..That's the step that keeps throwing me off.
 one year ago

CheezeFaceBest ResponseYou've already chosen the best response.0
..Um any break downs for it?..
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
dw:1354711713075:dw
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
dw:1354711757394:dw
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
dw:1354711865053:dw
 one year ago
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