已知tanA=3.748,则锐角A的度数为 (精确到1“)
问题描述:
已知tanA=3.748,则锐角A的度数为 (精确到1“)
答
tan A=3.748
A=arc tan 3.748
=75.0609713°
=75°(0.0609713*60)'
=75°3.658278'
=75°3'(0.658278*60)"
=75°3'39.5"