269 incorrect trench normal angle calculation #753

Job	Run time
Test Python 3.8 on ubuntu-latest	2m 27s
Test Python 3.9 on ubuntu-latest	2m 14s
Test Python 3.10 on ubuntu-latest	2m 23s
Test Python 3.11 on ubuntu-latest	2m 12s
Test Python 3.12 on ubuntu-latest	2m 18s
Test Python 3.8 on macos-latest	2m 50s
Test Python 3.9 on macos-latest	2m 50s
Test Python 3.10 on macos-latest	2m 57s
Test Python 3.11 on macos-latest	2m 57s
Test Python 3.12 on macos-latest	2m 45s
Test Python 3.8 on windows-latest	5m 44s
Test Python 3.9 on windows-latest	8m 11s
Test Python 3.10 on windows-latest	7m 20s
Test Python 3.11 on windows-latest	8m 10s
Test Python 3.12 on windows-latest	6m 20s
	1h 1m 38s

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