sin²60°+sin²30°=1
因为sin30°=con60°
sin²A+con²A=1
√12-(1-√3)°+1/2-2tan60°
=√2²X3-1+1/2-√3
=2√3-1/2-√3
=√3-1/2
(1+2/m)/m²-4/2m
=(1+2/m-2m)/m²
=(m+2-2m²)/m³
代入m值
sin²60°+sin²30°=1
因为sin30°=con60°
sin²A+con²A=1
√12-(1-√3)°+1/2-2tan60°
=√2²X3-1+1/2-√3
=2√3-1/2-√3
=√3-1/2
(1+2/m)/m²-4/2m
=(1+2/m-2m)/m²
=(m+2-2m²)/m³
代入m值