New Posts For Thread: Maths Helphttps://community.betfair.com/general_betting/go/thread/view/94082/23512650/maths-helpCan anyone remember their days of studying GCSE trigonometry? My kid's trying to work out the surface area and angle of a rooftop.House is 5m x 7m rectangle with a pitched roof from front to back. If you go into the loft, the middle of the roof is 22Thanks everyone.https://community.betfair.com/general_betting/go/thread/view/94082/23512650/maths-help?post_id=420134426#420134426Thanks everyone.Mon, 08 Feb 2010 12:21:36 -0600s = o / hc = a / ht = o / aSo TAN a = 220/350=.62857a= tan-1(.62857) = 32.15 degrees.Hyp^2 = 220^2 + 350 ^2 = 170900hyp = sqrt(170900)=413.4cmHowever if it is only trig he is supposed to be doing then you can find the hypot out using sin or cos, aftehttps://community.betfair.com/general_betting/go/thread/view/94082/23512650/maths-help?post_id=420134394#420134394s = o / hc = a / ht = o / aSo TAN a = 220/350=.62857a= tan-1(.62857) = 32.15 degrees.Hyp^2 = 220^2 + 350 ^2 = 170900hyp = sqrt(170900)=413.4cmHowever if it is only trig he is supposed to be doing then you can find the hypot out using sin or cos, afteMon, 08 Feb 2010 02:42:48 -0600As far as the angle from memory you need to divide 220 by 350 then inverse tan the result. Though memory might be a but hazy.https://community.betfair.com/general_betting/go/thread/view/94082/23512650/maths-help?post_id=420134370#420134370As far as the angle from memory you need to divide 220 by 350 then inverse tan the result. Though memory might be a but hazy.Sun, 07 Feb 2010 15:27:04 -0600a² + b² = c²Where a and b represent the two sides you know and c = the diagonal.So if a = 3 ft and b = 3 ft, the two sides of your squarea² = 3 x 3 and b² = 3 x 39 + 9 = c²18 = c²√18 = 4.24 ftc = 4.24 ft being the square root of 18https://community.betfair.com/general_betting/go/thread/view/94082/23512650/maths-help?post_id=420134366#420134366a² + b² = c²Where a and b represent the two sides you know and c = the diagonal.So if a = 3 ft and b = 3 ft, the two sides of your squarea² = 3 x 3 and b² = 3 x 39 + 9 = c²18 = c²√18 = 4.24 ftc = 4.24 ft being the square root of 18Sun, 07 Feb 2010 15:22:22 -0600Only did CSE maths, and that 31 years ago. The hypotenuse equals the square root of the sum of the squares of the other 2 sides. So hypothenuse = square root of (220^2 + 350^2) = 413.4Yes you can work out the angles using sin etc. But can't remembhttps://community.betfair.com/general_betting/go/thread/view/94082/23512650/maths-help?post_id=420134362#420134362Only did CSE maths, and that 31 years ago. The hypotenuse equals the square root of the sum of the squares of the other 2 sides. So hypothenuse = square root of (220^2 + 350^2) = 413.4Yes you can work out the angles using sin etc. But can't remembSun, 07 Feb 2010 15:20:02 -0600Can anyone remember their days of studying GCSE trigonometry? My kid's trying to work out the surface area and angle of a rooftop.House is 5m x 7m rectangle with a pitched roof from front to back. If you go into the loft, the middle of the roof is 22https://community.betfair.com/general_betting/go/thread/view/94082/23512650/maths-help?post_id=420134358#420134358Can anyone remember their days of studying GCSE trigonometry? My kid's trying to work out the surface area and angle of a rooftop.House is 5m x 7m rectangle with a pitched roof from front to back. If you go into the loft, the middle of the roof is 22Sun, 07 Feb 2010 15:03:44 -0600