Simplify sin10 + cos80 + √ 3sin10cos80

Simplify sin10 + cos80 + √ 3sin10cos80

sin10+cos80+√3sin10cos80
=sin10- sin10-√3sin10sin10
=-√3sin10sin10
=-√3（sin10）^2
=-√3（1-cos20）/2

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The total number of calculation is 80

8×25×1．25×16 4．04×250 45．55－（6．82＋15．55）
3．2×99＋3．2 4.8×39＋61×4．8 34．52－17．87－12．23
2．5×56+4．5×65 489×101－489 4．57+3．17+3．43+5．83
（85＋40）×（20－5） 578－405÷45×16 4．6×56＋48×4．6－4．6×4
1.3/7 × 49/9 - 4/3
2.8/9 × 15/36 + 1/27
3.12× 5/6 – 2/9 ×3
4.8× 5/4 + 1/4
5.6÷ 3/8 – 3/8 ÷6
6.4/7 × 5/9 + 3/7 × 5/9
7.5/2 -（ 3/2 + 4/5 ）
8.7/8 + （ 1/8 + 1/9 ）
9.9 × 5/6 + 5/6
10.3/4 × 8/9 - 1/3
11.7 × 5/49 + 3/14
12.6 ×（ 1/2 + 2/3 ）
13.8 × 4/5 + 8 × 11/5
14.31 × 5/6 – 5/6
15.9/7 - （ 2/7 – 10/21 ）
16.5/9 × 18 – 14 × 2/7
17.4/5 × 25/16 + 2/3 × 3/4
18.14 × 8/7 – 5/6 × 12/15
19.17/32 – 3/4 × 9/24
20.3 × 2/9 + 1/3
21.5/7 × 3/25 + 3/7
22.3/14 ×× 2/3 + 1/6
23.1/5 × 2/3 + 5/6
24.9/22 + 1/11 ÷ 1/2
25.5/3 × 11/5 + 4/3 26.45 × 2/3 + 1/3 × 15
27.7/19 + 12/19 × 5/6
28.1/4 + 3/4 ÷ 2/3
29.8/7 × 21/16 + 1/2
30.101 × 1/5 – 1/5 × 21
I'm a little dizzy. I forgot what the off form calculation is like. It seems that some of them don't meet the requirements, but I can only find these. I hope I can help you