Question

Geometry help please! :)

2. Will you check this for me please?

3 and 5. Look at pictures attatched below please

Answer 1

...what pictures?

Answer 2

@britanyashton above

Answer 3

Well, 2 looks like you've got it. Remember the rules of a 30-60-90 triangle. The short leg is half of the hypotenuse and the long leg is the short leg times the square root of three.

Answer 4

In a 45-45-90 triangle, the leg is 1/2 of the hypotenuse times the square root of two. The hypotenuse is the leg time square root of two.

Answer 5

I am coming out with a decimal and its incorrect (for #3) @AthenaWolf

Answer 6

What decimal are you getting?

Answer 7

7.09

Answer 8

That is really close. You don't need it in decimal form on the problem though.

Answer 9

is it 15/2?

Answer 10

Not quite. Remember that you're solving for the leg using the hypotenuse of a 45-45-90 triangle.

Answer 11

Yeah I understand that I just cant seem to understand it

Answer 12

Okay. Let's break it down then. What is 1/2 of the hypotenuse in number 3?

Answer 13

5

Answer 14

Okay, so what do you need to multiply that by to get the answer according to the formula?

Answer 15

square root of 2

Answer 16

Exactly! So what is the answer?

Answer 17

5 square root 2?

Answer 18

Correct! Great job!

Answer 19

what about 5?

Answer 20

Well, if the long leg is the short leg times the square root of three, how would you get the short leg from the long leg?

Answer 21

divide it by the square root of 3?

Answer 22

Yes! Then you will need to rationalise the denominator by multiplying both the top and the bottom by square root of three.

Answer 23

so the answer would be D?

Answer 24

Not quite. Remember that you are using square root of three.