Thedreamer Posted July 31, 2018 Share Posted July 31, 2018 Could anybody please help with an angle calculation? Looking at ordering a metal flashing between the main slate roof (45 degree pitch) and the lean to metal roof (15 degree pitch). What would be the method to calculate the angle where the two roof pitches meet? Hopefully, somebody can help, or I might need to dust off the old GCSE maths books! The image hasn't copied across well but this will help show what I'm trying to calculate. Link to comment Share on other sites More sharing options...
Dreadnaught Posted July 31, 2018 Share Posted July 31, 2018 (edited) Off the top of my head: 180º - (45º - 15º) = 150º ? Edited July 31, 2018 by Dreadnaught 1 1 Link to comment Share on other sites More sharing options...
Onoff Posted July 31, 2018 Share Posted July 31, 2018 1500 included angle I make it: 1 1 Link to comment Share on other sites More sharing options...
LA3222 Posted July 31, 2018 Share Posted July 31, 2018 Crap picture done on my phone....but along line of what others are saying. 1 Link to comment Share on other sites More sharing options...
Ferdinand Posted July 31, 2018 Share Posted July 31, 2018 (edited) Quick check ... should be 5 sides of the new 12 side pound coin, or something similar, when centred on the meeting point on the plan. Edited July 31, 2018 by Ferdinand 1 Link to comment Share on other sites More sharing options...
Thedreamer Posted July 31, 2018 Author Share Posted July 31, 2018 Thanks very much guys, much appreciated. Memories of compasses and protractors are coming back to me now. I'll check with pound coin as suggested @Ferdinand Link to comment Share on other sites More sharing options...
Ferdinand Posted July 31, 2018 Share Posted July 31, 2018 (edited) 2 hours ago, Thedreamer said: Thanks very much guys, much appreciated. Memories of compasses and protractors are coming back to me now. I'll check with pound coin as suggested @Ferdinand I was racking my brain for something a little bigger to make it a bit easier, and I guess you could use a clock or a clock face. Any 5 hours will be 150 degrees. Not sufficent for accuracy, but probably enough to show up if it is way off. Edited July 31, 2018 by Ferdinand Throw -> Show. A sickening typo. 1 Link to comment Share on other sites More sharing options...
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