来自潘振华的问题
特殊三角函数值化简a^3tan45°+a^2btan60°+9ab^2cot^260°+2b^3cos60°2cos^245°-3acot45°+a^2tan^260°-2a^3sin^245°4a^2sin^445°-6abtan^230°+(b*cot45°)^2
特殊三角函数值化简
a^3tan45°+a^2btan60°+9ab^2cot^260°+2b^3cos60°
2cos^245°-3acot45°+a^2tan^260°-2a^3sin^245°
4a^2sin^445°-6abtan^230°+(b*cot45°)^2
1回答
2020-01-29 22:09