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alexdok [17]
3 years ago
8

Please show the solving

Mathematics
1 answer:
alisha [4.7K]3 years ago
8 0

Step-by-step explanation:

<u>YELLOW TRIANGLE:</u>

<u>\sin(30)  =  \frac{x}{12}  \\ x = 12 \sin(30)  = 6</u>

<u>PURPLE TRIANGLE:</u>

Since one of the angle is 45°, x = BC = 6

To prove:

\tan(45)  =  \frac{bc}{x}  \\ bc = x \tan(45)  = 6 \tan(45)  = 6

<u>PINK TRIANGLE:</u>

<u>\tan(60)  =  \frac{bc}{y}  \\ y =  \frac{bc}{ \tan(60) }  \\  =  \frac{6}{ \tan(60) }  \\  = 2 \sqrt{3}</u>

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nirvana33 [79]
To solve systems of equations you have 3 ways: Substitution, Elimination, and Graphing.
For graphing you could use desmos or a graphing calculator.
For substitution, you solve for x or y on one of your equations and, for example, let's say you solve for x, you take whatever x equals to (EX. x=y+2) and plug it into your other equation (EX. 3(y+2)-y=3)
For elimination, get x or y to be the same number but opposites (one positive one negative) then you "add" the two systems together and then you should end up with #x=# or #y=#, (EX. 2x=6) last step is to divide.

Hope this helps
5 0
3 years ago
What is the answer to the question?​
Andreyy89

Answer:

17

Step-by-step explanation:

We have two congruent triangles here.  Thus, b must be 17.

3 0
3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Factoring

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