Answer:
Step-by-step explanation:
you have to use trigonometric functions
cos 30 = adj. /hyp.
cos 30 = 12 / y
y = 12/cos 30 ≅13.86
tan 30 = opp./adj
tan30 = x / 12
x = 12 tan30 ≅6.93
Answer: a=1,b=1
Step-by-step explanation:
b
Let A = {Dirk, Johan, Frans, Sarie}, B = {Frans, Sarie, Tina, Klaas, Henrika}, C = {Hans, Frans}. Find the number indicated.
vovangra [49]
Thank you for posting your question here at brainly. I assume the question should be "<span>Find the number indicated". below is the answers:
</span>B U C means B union C which combines them:
<span>{Frans, Sarie, Tina, Klaas, Henrika, Hans} note that there is no need to write Frans twice. </span>
<span>∩ means intersection which is only what the two sets have in common, in this case: </span>
<span>{Frans, Sarie} </span>
<span>the number is 2. </span>
11 and 44 because 44 is 4 times as much bigger than 11
![\left[\begin{array}{ccc}Your\;answer\;is\;48\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7DYour%5C%3Banswer%5C%3Bis%5C%3B48%5Cend%7Barray%7D%5Cright%5D)
<u>Explanation</u>
Find the Least Common Multiple of the denominators (which is called the Least Common Denominator).
Change each fraction (using equivalent fractions) to make their denominators the same as the least common denominator.
Then add (or subtract) the fractions, as we wish!
<u>Credit to mathisfun.com!</u>
