1 .分锥角
2
,1mz
)()()2
,12,1*2,12,12,1222cos 2cos arccos
tan tan cos tan d a a a d a x h z z z a t
t vat t ++=ú
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ù-+)
p ))
cos (sin a b ×m
)
180cos()
180sin(arctan
90cos sin arctan
9011?--?-=°>??
+?=°
arctan 901
=°=?z ê±￡?|?μ±2,1d =
(()111
,cos /tan n tan cos b a a d z vat /(sin b m b /a