Maths assistance required

[104456]

Hi all what it is Im proposing to install a french window set and sometime in the future a uPVC conservertory with a 4 dgree pitched roof but dont want the hieght of the opening door to hit the conservatory roof.My head wont get round the maths of some of it so Im looking for a fifth grader in maths.




In the image shown below I propose a 2500mm lefthand wall and an 1800mm base so what Im looking for is the prospective size of the right hand wall given the 4 degree pitch.Thanks for all those people who remember logorithums and algabraic equations from school for their help

[lgbpop]

What you need to do is to split your trapezoid into a rectangle and a right triangle, then determine the short side of the triangle and subtract that amount from 2500mm to get your answer. It's an ASA (angle-side-angle) trig problem. I cheated and used this, since I forget the formula. Rounding up to whole numbers, the triangle short side is 126mm so your shorter trapezoid (wall) height should be 2374mm.

[104456]

Ah good man thanks....I got the need to work out the triangle but my foggy brain went back to angles and logarithm tables [shudder] and got lost along the way

[Train]

Hit the store and get a lazer level with the built in angle reader.

They stop all kinds of headaches.

[104456]

The door aint there yet its all on paper at the moment.I just want to make sure it`ll all fit once its done

[Train]

True, but one of those levels and a step ladder sure helped me last december.

[lgbpop]

Doveryai no proveryai. Double-check the figures and measure twice before final assembly.

[104456]

Nostrovia
http://en.wikipedia.org/wiki/Trust,_but_Verify

Trust, but Verify was a signature phrase of Ronald Reagan. He used it in public, although he was not the first person known to use it. When Reagan used this phrase, he was usually discussing relations with the Soviet Union and he almost always presented it as a translation of the Russian proverb "doveryai, no proveryai" (Russian: Доверяй, но проверяй) - Trust, but Verify. At the signing of the INF Treaty he used it again and his counterpart Mikhail Gorbachev responded: "You repeat this phrase every time we meet," to which Reagan answered "I like it."[citation needed]

The phrase has also been attributed to U.S. journalist and fiction writer Damon Runyon, 1884-1946[citation needed]

Доверяй, но проверяй was the Russian title of a 1950 work by Irwin Shaw.[citation needed]

"Trust, but Verify", is also the name of a book by David Lindgren, about his experiences with satellite imagery during the Cold War, and the basics about them.

This quote was supposedly a favourite one of Felix_Edmundovich_Dzerzhinsky. It is in use in former Czechoslovakia for example..

[SuperSparks]

2374mm by my reckoning.

I used to be top dog at Trig when I was at college, but I'm sorry to say that I have got a bit rusty in my old age

[104456]

Cheers Im much the same.Got used to using computers and not my noggin