Final answer:
To round 7 tan 18 to one decimal place, calculate the value of the expression and round it to one decimal place. The rounded value of 7 tan 18 is 2.3.
Step-by-step explanation:
To round 7 tan 18 to one decimal place, we need to first calculate the value of the expression. Using a calculator, we find that 7 tan 18 is approximately 2.2774.
Now, to round this to one decimal place, we look at the digit in the tenths place. In this case, it is 7. Since 7 is greater than 5, we round the number up. Therefore, the rounded value of 7 tan 18 to one decimal place is 2.3.