sin²30°+cos²30°+√8tan45°-6sin45°+﹙-1﹚²º&
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/28 21:14:31
sin²30°+cos²30°+√8tan45°-6sin45°+﹙-1﹚²º¹²
![sin²30°+cos²30°+√8tan45°-6sin45°+﹙-1﹚²º&](/uploads/image/z/18697389-69-9.jpg?t=sin%26%23178%3B30%C2%B0%2Bcos%26%23178%3B30%C2%B0%2B%E2%88%9A8tan45%C2%B0%EF%BC%8D6sin45%C2%B0%EF%BC%8B%EF%B9%99-1%EF%B9%9A%26%23178%3B%26%23186%3B%26)
sin²30°+cos²30°+√8tan45°-6sin45°+﹙-1﹚²º¹²
=(sin²30°+cos²30°)+√8tan45°-6sin45°+﹙-1﹚²º¹²
=1+2√2*1-6*√2/2+1
=1+2√2-3√2+1
=2-√2
=(sin²30°+cos²30°)+√8tan45°-6sin45°+﹙-1﹚²º¹²
=1+2√2*1-6*√2/2+1
=1+2√2-3√2+1
=2-√2
计算:(1)根号2sin45°+cos²60°-根号3tan60°+sin30°·tan45°
tan²30°+cos²30°-sin²45°tan45°
计算:sin²30°+cos²45°+根号2sin60°×tan45°
化简根号下(sin45°-1)²+根号下1-cos²30°
(1)sin60°-tan45°; (2)cos60°+tan60°; (3)根号2 /2 sin45°+sin60°-
sin平方120°+cos180°+tan45°-cos平方(-330°)+sin(-210°)
计算 sin30°+cos²60°-tan45°-根号3*tan30°
根号【cos45°-cos30°】*2-tan60°分之tan45°+sin45°
sin60 sin30 cos60 cos30 sin45 cos45 tan30 tan60 tan45°各等于多少
cos60°.tan45°—sin60°.cos30°+sin45°.cos45°.需要步骤可以吧
我们知道:sin30°=1/2,tan30°根号下3/3,sin45°=根号下2/2,tan45°=1,sin60°=根
化简:tan45°+sin420°×1/tan(-60°)+1/2(sin平方15°+cos平方15°)