A manual not afraid to include the word "trigonometry" and/or its derivatives!
Bahhh .... I'll say it! The good old days ..... 
Thanks LukeFF! 
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- Oh God! They're all over the place! CRASH DIVE!!!
- Ehm... we can't honey. We're in the car right now.
- What?... er right... Doesn't matter! We'll give it a try anyway!
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