1/12/派×180度=4.77度
2019-02-06
≈26°33‘54.18”
tanθ=1/2
θ=arc tan1/2
=26.565051177077989351572193720453.°
=26°33.903070624679361094331623227198.‘
=26°33’54.184237480761665659897393631861.“
≈26°33‘54.18”
角θ在任意直角三角形中,与θ相对应的对边与邻边的比值叫做角θ的正切值。若将θ放在直角坐标系中即tanθ=y/x。tanA=对边/邻边。在直角坐标系中相当于直线的斜率k。
2019-02-06 ≈26°33‘54.18” tanθ=1/2 θ=arc tan1/2 =26.565051177077989351572193720453.° =26°33.903070624679361094331623227198.‘ =26°33’54...