cos等于0.0832等于多少度

2025-02-27 09:24:15
推荐回答(1个)
回答1:

(1)COS60°-COS45°+tan45°,
=1/2-√2/2+1
=(3-√2)/2
(2)cos²60°+sin²45°,
=(1/2)²+(√2/2)²
=1/4+2/4
=3/4