<span>306 * 24 : 72 - ( 35280 : 7 - 63 * 80 ) : 97=
</span><span>1) 35280 : 7 = 5040
</span><span>2) 63 * 80 =5040
</span>3) 5040 - 5040 = 0<span>
4) 0 : 97 = 0
</span><span>5) 306 * 24 = 7344
</span><span>6) 7344 : 72 = 102
</span>7) 102 - 0 = 102
1) sin30= 1/2; cos 60 = 1/2
1/2+1/2=1
2) tg 45 = 1; sin60 = sqrt(3)/2; cos45 = sqrt(2)/2
1 - sqrt(2)/2 - sqrt(3)/2 = (2- sqrt(3)-<span>sqrt(2))/2
3) 1</span>
800100-184307=615793
900000-107096=792904