Question

In triangle DEF, DE = 17 and m 12 years ago

Answer 1

@skullpatrol can you help?

Answer 2

Why did you close the question?

Answer 3

I didn't think you knew :/

Answer 4

Somebody else could have helped you.

Answer 5

But no one was...

Answer 6

Patience .... It will give you time to think about the question, no?

Answer 7

I guess. I still don't understand..

Answer 8

Your diagram is a very good start :) now just label the parts of it with the given facts.

Answer 9

Excellent :D
Now, label the unknown you are looking for.

Answer 10

hahaha wait what do you mean

Answer 11

These are the given facts in the question:

In triangle DEF,
DE = 17
and
m<F=32.

right?

Answer 12

yes

Answer 13

Now, what is the question asking for?

Answer 14

to find df

Answer 15

Yes, " Find DF to the nearest tenth."

Where is this unknown quantity in your diagram?

Answer 16

it's the hypotenuse lol

Answer 17

Label it with a symbol used to represent that number.

Answer 18

like with x?

Answer 19

Sure, use whatever symbol you want :-)

Answer 20

So, you now have learned the definition of what a "variable" is :D

variable: A symbol used to represent one or more numbers.

Answer 21

hahaha well i knew that :P

Answer 22

Orly?

Answer 23

mhm. i just didn't know what you meant :P

Answer 24

Ok, now what?

Answer 25

haha i have no clue.

Answer 26

You said you knew what a "variable" was now explain to me how that is going to help us solve this particular problem @ehmuleeee ?

Answer 27

i dunno.

Answer 28

Try to think.

Answer 29

If a variable is a symbol used to represent a number then what does that mean?

Answer 30

Any idea?

Answer 31

It means we can manipulate it just like any other number in an equation, right?

Answer 32

i think

Answer 33

variable: A symbol used to represent one or more numbers.

Answer 34

ok

Answer 35

The variable represents the unknown number.

Answer 36

oh ok

Answer 37

Math is FULL of definitions and this one you need to understand completely and feel comfortable in using letters and symbols to represent numbers.

Answer 38

alright :/

Answer 39

Why the :/

Answer 40

because this is hard..

Answer 41

Yes it is, at first hard to get used to these new ideas, but you need to get practice using them and get comfortable with it.

Answer 42

So what is a "variable"?

Answer 43

something that represents a number that you don't know yet.

Answer 44

Excellent.
variable: A symbol used to represent one or more numbers.

Answer 45

okkkkk

Answer 46

Let's finish this question.

Answer 47

ok :)

Answer 48

In trigonometry you will find the definition of the sin of an angle is

$$sin (angle) = \frac{opposite}{hypotenuse}$$

Answer 49

sin(32)= 17/x?

Answer 50

Good work, now because "x" just represents an unknown number solve for x.