sin60°-cos30°cos45°=?
1个回答
sin60°-cos30°cos45°
=√3/2-√3/2*√2/2
=(2√3-√6)/4
相关问题
sin²60°+cos²60°、tan45°-sin30°×cos60°、cos²45°/
sin30° sin45° sin60° cos30° cos45° cos60° 以此类推,都等于多少
cos30°— sin45° ———————— sin60°— cos45°计算
1.cos30°-sin45°/sin60°-cos45° 2.(sin30^2)30°+2sin60°+tha45°-
(1+Cos45°-Sin30°)(1-Sin45°+Cos60°)=
计算:(sin60°−cos45°)(cos30°+sin45°)cos245°+cot60°•sin60°-3cot6
求几个特殊的三角函数sin30° sin45° sin60° sin90° cos30° cos45° cos60° c
cos²45°-1/cos60°+1/tan45°+cos²30°+sin²45°
cos30°,45°60° tan60°45°30° sin30°60°45°
1、sin45°—cos60°+tan60° 2、cos平方30°—tan30°+cos45° 3