医保生育报销比例:化简:2sin50°/sin100°+tan10°
来源:百度文库 编辑:中科新闻网 时间:2024/04/29 09:13:31
2sin50°/sin100°+tan10°
=2sin50°/cos10°+sin10°/cos10°
=(2sin50°+sin10°)/cos10°
=[2sin(60°-10°)+sin10°]/cos10°
=(√3cos10°-sin10°+sin10°)/cos10°
=√3
原式=2sin50/cos10+sin10/cos10
=[2sin60cos10-2cos60sin10+sin10]/cos10
=√3
9的平方根
根号3
=√3
sin10°sin30°sin50°sin70°=?
化简:2sin50°/sin100°+tan10°
化简:2sin50°/sin100°+tan10°
化简:(根号1-2sin10°×cos10°)比sin10°-根号1-sin^210°
求值2sin20°+2cos20°+cos70°sin10°/sin70°
求值2sin20°+2cos20°+cos70°sin10°/sin70°
1/sin10°-(根号3)/cos10°
求(3/sin^2 140°-1/cos^2 140°)*1/(2sin10°)
sin50°(1+cot80°)
化简√(1+Sin10º)+√(1-Sin10º)