计算 3 tan30°- √(1-2 tan60°+tan260° )+cos0°•cos45°
问题描述:
计算 3 tan30°- √(1-2 tan60°+tan260° )+cos0°•cos45°
答
3 tan30°- √(1-2 tan60°+tan260° )+cos0°•cos45°
=√3-√3+1+√2/2
=√2/2 + 1