The problem indicates to calculate cos 12 degrees. So we calculate the cosine of 12 degrees, which is 0.985
Multiply it by the given number 2.6
0.985 * 2.6 = 2.561
Round the result to 2 decimal places
2.56 (rounded to 2 d.p.)
Therefore, 2.6 cos 12 degrees rounded to 2 d.p. is 2.56
Thanks