75.0
Rounded to the nearest tenth, sqrt(75) = 8.7.
38.00
It is 75
80
cos(75 deg) = 0.2588, approx.
cos 255 deg = - 0.2588 <-----[ Answer ]
Well, darling, 75 rounded to the nearest 10 is 80. It's not rocket science, honey. Just bump that 5 up to the nearest 10 and call it a day.
75.0
75
Rounded to the nearest tenth, sqrt(75) = 8.7.
38.00
89.00
0.4695
100
75.0
100