Ensure BigMath.sin and BigMath.cos to be within -1..1 #382

Job	Run time
ruby-versions / Generate Ruby versions	3s
ubuntu-latest 2.7	1m 3s
ubuntu-latest 3.0	31s
ubuntu-latest 3.1	34s
ubuntu-latest 3.2	36s
ubuntu-latest 3.3	33s
ubuntu-latest 3.4	32s
ubuntu-latest debug	41s
ubuntu-latest head	27s
macos-latest 2.7	56s
macos-latest 3.0	27s
macos-latest 3.1	29s
macos-latest 3.2	23s
macos-latest 3.3	20s
macos-latest 3.4	21s
macos-latest debug	25s
macos-latest head	20s
macos-14 2.7	55s
macos-14 3.0	23s
macos-14 3.1	29s
macos-14 3.2	23s
macos-14 3.3	21s
macos-14 3.4	22s
macos-14 debug	27s
macos-14 head	20s
windows-latest 2.7	3m 55s
windows-latest 3.3	1m 16s
windows-latest 3.4	4m 33s
windows-latest head	50s
windows-latest mingw	2m 14s
windows-latest mswin	1m 33s
	26m 42s

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