I'll give you three examples of tangents in the real world:
<u>Ski on a snowy mountain.
</u>
<u>A street under a car wheel.
</u>
<u>The line formed between the armpit and a deodorant type roll on.</u>
Step-by-step explanation:
Remember <em><u>a tangent is a straight line that touches a curve in a point</u></em>, by this reason, you can search examples where there are curves (like the snowy mountain, car wheel and the deodorant type roll on in the answer), touched by a beeline (ski, street, and armpit) in just a point, in the same form, you can use as an example a ball on a soccer field and others. I don't know what examples gave you in the lesson but I'm sure at least one of the examples I give you must function.
21.78, take and multiply 2.79 by 5 ( there are 5 week days), and add the 7.83 once because it is the price for the two coffees. So weekly he spends roughly 21.78 on coffees