Anyone know Pythagoras?
28-10-2010, 06:43 PM
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Anyone know Pythagoras?
Hi all
Trying to work out the following, length of side A, and angles B and C. Drawing is not to scale! If anyone could help I would much appreciate it, been trying to work it out for ages now, come up with different answers every time
Thanks
Rich
28-10-2010, 06:49 PM
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Split it in to a rectangle and a triangle.
28-10-2010, 06:50 PM
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I keep coming up with 32.6, so we'll agree on that one! Just the angles bit I'm stuck on! Might go get my school text books out the loft
28-10-2010, 06:50 PM
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The other info helpful there is all angles inside triangle add up to 180, so B+C=90
28-10-2010, 06:51 PM
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I thought Pythagorus theorum was triangles? You can't make a triangle outta that...
Edit: My bad, just looked properly now!!
Last edited by Dangerous Malcolm..; 28-10-2010 at 06:53 PM .
28-10-2010, 06:53 PM
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Quote:
Originally Posted by
Mal.
I thought Pythagorus theorum was triangles? You can't make a triangle outta that...
You can make triangles out of anything
Draw a line down from angle B to make a right angle with the bottom line.
Now you can apply pythag
28-10-2010, 06:57 PM
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I just got 32.6 too!
28-10-2010, 06:57 PM
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OK, B = 90 + sin^-1 (16/32.6)
28-10-2010, 07:01 PM
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28-10-2010, 07:05 PM
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28-10-2010, 07:10 PM
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You are joking right this was junior school stuff back in the 50's.
28-10-2010, 07:31 PM
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Quote:
Originally Posted by
MadRod
You are joking right this was junior school stuff back in the 50's.
did they have school back in your day
whats the answer then rodney
28-10-2010, 07:47 PM
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Why not draw it to scale and use a angle measure thingy (protractor i think) and measure A with a ruler?
28-10-2010, 07:55 PM
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Quote:
Originally Posted by
Lawbags
Why not draw it to scale and use a angle measure thingy (protractor i think) and measure A with a ruler?
Because there is no need.
And I'd love to see you measure 0.39 of a degree too lol.
28-10-2010, 07:56 PM
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Quote:
Originally Posted by
andy escos
did they have school back in your day
whats the answer then rodney
He'll still be working it out on his abacus!!
28-10-2010, 07:59 PM
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Quote:
Originally Posted by
Mal.
He'll still be working it out on his abacus!!
Yea, there's a 'I love steam engines' scribble on his sin tables too
28-10-2010, 08:00 PM
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28-10-2010, 08:01 PM
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Quote:
Originally Posted by
St3V3_C
Because there is no need.
Haha....fair one.
28-10-2010, 08:06 PM
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Quote:
Originally Posted by
St3V3_C
Yea, there's a 'I love steam engines' scribble on his sin tables too
28-10-2010, 08:13 PM
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Bollocks - started working this out just before my dinner was dished up and then came back to it after i'd eaten and you've all beaten me to, bastards.
28-10-2010, 08:20 PM
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rob, since then they invented calculators mate
28-10-2010, 08:22 PM
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28-10-2010, 08:52 PM
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Thanks all for the replies guys!!! Saved me all a big headache
28-10-2010, 09:44 PM
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SOHCAHTOA
28-10-2010, 09:51 PM
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use sohcahtoa (sin cos and tan for those not in the know) that's on the easy paper for stranded grades (GCSE's) or for foke taking maths around the age of 16. (no offence ment :-/)
28-10-2010, 09:57 PM
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A = 32.5969
29-10-2010, 06:41 AM
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even rod is not old enough to know pythagoarus, he dies ages ago
29-10-2010, 07:33 AM
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29-10-2010, 09:39 AM
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29-10-2010, 09:42 AM
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29-10-2010, 02:28 PM
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Thanks again guys, all worked out a treat
Good to see Rod is STILL yet to change his very, very, broken record!!
29-10-2010, 02:35 PM
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Quote:
Originally Posted by
Rich170
Thanks again guys, all worked out a treat
Good to see Rod is STILL yet to change his very, very, broken record!!
PMSL.....didn't actually give the 'piss easy' answers though did he Rich
29-10-2010, 02:37 PM
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Quote:
Originally Posted by
rstdave
PMSL.....didn't actually give the 'piss easy' answers though did he Rich
Still busy dusting off the abacus and chalk and slate I guess
29-10-2010, 02:39 PM
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Rich Learn SOHCAHTOA and pythagoras and also the clockface rule for estimating sines in your head.
29-10-2010, 02:42 PM
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Quote:
Originally Posted by
warrenpenalver
Its useful in a number of ways as well as doing calculations in your head for judging distance for overtaking etc.
If you have to be doing calculations to decide whether you should be overtaking, you shouldn't be overtaking!
29-10-2010, 02:44 PM
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29-10-2010, 02:51 PM
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Sohcahtoa for overtaking?
I did learn it at school, although I was preoccupied with squeezing the girl's leg that I used to sit next to though
Might dig my books out again and brush up on it sometime!!
29-10-2010, 02:55 PM
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Can't say I've ever sat behind someone slow and started doing pythagorus calculations on whether to overtake or not
29-10-2010, 03:00 PM
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Quote:
Originally Posted by
zetec-Sam
Can't say I've ever sat behind someone slow and started doing pythagorus calculations on whether to overtake or not
fuck that - by the time i'd have worked it out i would have been in the back of the car im trying to overtake
29-10-2010, 03:57 PM
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28-10-2010, 06:43 PM
Anyone know Pythagoras?
