Question

Use the triangle at the right. Find the length of the missing side.

Answer 1

1.
Use pythagoras
\[a^2+b^2=c^2\]

Answer 2

Do the same thing with question 2, but this you're finding a leg.
\[c^2-b^2=a^2\]

Answer 3

ok

Answer 4

wait i am lost i only need to Find the length of the missing side.

Answer 5

c is 2.9 & a is 63

Answer 6

That's what you're trying to do....That's the formula you use to find the missing side.

Answer 7

so i just add 2.9 to 63 to get the missing side???

Answer 8

you square each number you know.

Answer 9

tell me your equation by subbing those values in the equation.

Answer 10

so 2.9^2+63^2=the missing side???

Answer 11

nope. look at my equation I gave you.

Answer 12

ok

Answer 13

it;s c^2-a^2=b^2

Answer 14

a^2+b^2=c^2
so 16^2+63^= 3969

Answer 15

what's c? and what's a? put it into the correct position.

Answer 16

@gavinaxe It's advised that you guide them through it. Not tell them how to do it. The person would not be learning. ALl you're doing is practising your own maths knowledge.

Answer 17

so now you just find the square root of that and theres your answer. also remember all triangles have to add up to 180

Answer 18

C is 2.9 & A is 63

Answer 19

So substitute those values into that formula I gave you. place it in the right position....
\[c^2-a^2=b^2\]

Answer 20

And you only have the c value and b-value not the a-value.

Answer 21

2.9^2-63^2 right???

Answer 22

Read your own question. It says a=16, b=63....Where'd you get 2.9? That's with question 2?

Answer 23

What question are you doing?

Answer 24

oh i been reading it wrong

Answer 25

...

Answer 26

Lol, reading both at the same time? Please don't rush when doing maths. Maths recommends you to do it step by step in order to get your correct answers.

Answer 27

16^2+63^2 right and 2.1^2-2.9^2

Answer 28

Excellent work with the first question. The second question, not so much.

Answer 29

lol

Answer 30

You can't get a negative side length.

Answer 31

Look at what your wrote for the second question
\[2.1^2-2.9^2=-?\]
You must of known that 2.9^2 is larger than 2.1^2 and hence you would get a negative number?

Answer 32

Because if you didn't and just rolled with it, You're making a huge mistake.

Answer 33

ok so i just flip it around right???

Answer 34

2.9^2-2.1^2

Answer 35

Everything you just read from my comments, do you think that what you just wrote is correct? You have to know it yourself and be confident. You wouldn't be asking anyone if you were doing a test or exam, would you?

Answer 36

so true

Answer 37

So is that correct?
\[2.9^2-2.1^2\]

Answer 38

no

Answer 39

So you don't think that's correct?

Answer 40

no i do not. cause thats what i put & u said it was wrong

Answer 41

I did not ssay it was wrong. I asked you if that was correct or not.

Answer 42

yes i seem right to me

Answer 43

Then good job. That's correct.

Answer 44

So now you have to find what that equals then square root that answer.

Answer 45

i got 4^2 for 2.9^2-2.1^2

Answer 46

Do you have a calculator?

Answer 47

Sometimes maths requires a calculator?.....

Answer 48

no

Answer 49

you can look one up on the internet

Answer 50

ok

Answer 51

\[16^{2}+63^{2}=4225 \] root it to 65

Answer 52

Good on you. Excellent.

Answer 53

ok thanks. just wanted to come back and make sure. so i do the other one the same way right

Answer 54

Well, the second one had the hypotenuse and one of the sides. In the first question you did, you had two sides of the triangle but not the hypotenuse...

Answer 55

ok

Answer 56

\[2.9^{2}-2.1^{2}=4\] this looks wrong

Answer 57

No that's right. Now square root it...

Answer 58

root=2

Answer 59

Do you even need me to clarify for you because if you do, then seriously your confidence in maths is below zero.

Answer 60

its below 0 it really is

Answer 61

so for question #2 a=2, b=2.1, & c=2.9

Answer 62

What do you think? Because if you're doing questions which involve using the Pythagoras Theorem, I would be thinking of someone hwo knows how to square root the number 4.

Answer 63

who know*

Answer 64

i think it is right

Answer 65

4 rooted is 2

Answer 66

so a=2

Answer 67

Then good on you, because it is.

Answer 68

thank u so much now i can turn this test in and go to bed. its 4:50am here in florida thanks again goodnight.