<span>To do these you will be adding or subtracting 2pi (or integer multiples of .
Since the given angles are in fraction form, it will help to have 2pi in fraction form, 2pi=10/5=6pi/3=4pi/2=18pi/9 NOTE: this>(/) stands for over like 1 over 2 EX. 1/2
too, so the addition/subtraction is easier.
Hint: When deciding if you have a number between 0 and 2pi, compare it to the fraction version of 2pi that you've been adding/subtracting.
For 17pi/5... First we can see that 17pi/5 is more than 10pi/5 (aka 2pi). So we need to start subtracting: 17pi/5 - 10pi/5 = 7pi/5
Now we have a number between 0 and 10pi/5. So 7pi/5 is the co-terminal angle between 0 and 2pi.
I'll leave the others for you to do. Just remember that you might have to add or subtract multiple times before you get a number between 0 and 2pi. P.S don't add or subtract at all if the number starts out between 0 and 2pi.</span>
First let's define the variables of the problem: t: Tip b: dinner bill. We write the inequality based on the following proposition: "Maria would like to leave a tip (t) of at least 15% of her dinner bill (b)" We have then that the inequation is: t> = 0.15b Answer: An inequality best could be used to find the amount of the tip Maria would like to leave is: t> = 0.15b
