Question

http://gyazo.com/f6cd34893dc845eca0d0a61500763ce5

Answer 1

whats up

Answer 2

Figure: http://gyazo.com/0d4c71d84519b7b772dbae3a050d737e

Answer 3

next time post the question first

Answer 4

The question IS posted there @triciaal

Answer 5

is this goemetry

Answer 6

Yep

Answer 7

sorry cant help you with this one i have not learned it yet

Answer 8

Ah man, this is due tonight. Anyone else that can maybe help :p ?

Answer 9

hint :
\[\large \text{inscribed angle} = \dfrac{\text{arc measure}}{2}\]

Answer 10

find the angles ADE and BAD first

Answer 11

all paraphraased
the angle at center is directly proportional to the length of the arc

Answer 12

So @ganeshie8 it would be either A or B right?

Answer 13

Im not sure which question are we working on

Answer 14

I see you have attached two links and they have different questions

Answer 15

could you clarify

Answer 16

if the center = O the angle ACE = 1/2 AOE

Answer 17

oh the second like is just the measure (ignore the text on top of it). The original screenshot is the one I'm working on. With the A, B, C and D options. @ganeshie8

Answer 18

@triciaal Their is no option for ACE = 1/2(AOE)

Answer 19

still i dont get it, could you put everything in one picture and post it ?

Answer 20

Yea sorry one second

Answer 21

This is the problem: http://gyazo.com/f6cd34893dc845eca0d0a61500763ce5

Answer 22

Where it says "in the diagram above". This is the Diagram it is talking about:
http://gyazo.com/5c19372ed3b430ce2387dab9775da392

Answer 23

@CoolGuy13 I was just working through "aloud" I don't have the actual answer yet and I can't see your options. I am not very fast with these either. just trying to help. as expressed by @ganeshie8 as well given the arc length find the angles.
you have 45 and 110

Answer 24

@triciaal Thanks for helping!

Answer 25

@ganeshie8 Do you see the new problem?

Answer 26

Alright, so you're working on Part II, question a ?

Answer 27

Yes

Answer 28

Okay good, there is a formula for finding the angle ACE outside a point :
\[\large m\angle ACE = \dfrac{\text{far arc - near arc}}{2}\]

Answer 29

look at the given diagram from angle ACE

Answer 30

far arc = ?
near arc = ?

Answer 31

far arc = AE
near arc = BD

Answer 32

perfect ! so plug them in

Answer 33

\[\large m\angle ACE = \dfrac{\text{mAE - mBD}}{2} \]

Answer 34

So answer would be B ?

Answer 35

Yep!

Answer 36

32.5 for part B?

Answer 37

AE = 110
BD = 45
110 - 45 = 65
65 / 2 = 32.5
m<ACE = 32.5

Answer 38

And for Part C, how would i use this to find M<BAD ? @ganeshie8

Answer 39

m<ACE = 32.5 is \(\large \color{Red}{\checkmark}\)

Answer 40

use inscribed angle formula for part C

Answer 41

\[\large \text{inscribed angle} = \dfrac{\text{arc measure}}{2}\]

Answer 42

What would arc measure be?

Answer 43

BAD eats the arc 45 right ?

Answer 44

Yea

Answer 45

45 / 2 ?

Answer 46

Yep!

Answer 47

thank you so much @ganeshie8. I have 2 (a lot shorter) more problems and this is due in about an hour. Think you can help me out with them?

Answer 48

sure post them here

Answer 49

5: Part 1 & 2: http://gyazo.com/2a7ec73723131211c1e628a4d81e4c30

Answer 50

Would part 1 be 360 - 90 ?

Answer 51

@ganeshie8 ?

Answer 52

Part I :
\[\large \dfrac{90}{360}\]

Answer 53

which equals 1/4 right ?

Answer 54

basically the length of arc AB would be 1/4 of the circumference of the full circle

Answer 55

knw how to work part II ?

Answer 56

emmm

Answer 57

Can you refresh my memory?

Answer 58

diameter = 32
radius = ?

Answer 59

circumference = \(\large 2~\pi ~r = ?\)

Answer 60

Wait isn't the equation right on top of the figure?

Answer 61

http://gyazo.com/744b6067a2b5fe4cb89dcbeb981122cc

Answer 62

yes

Answer 63

you have already calculated mAB/360 = 90/360 = 1/4

Answer 64

find the circumference and multiply that by 1/4

Answer 65

2 * 3.14 * 16 = 100.48 * 1/4 = 25.12

Answer 66

Is that right?

Answer 67

looks good!

Answer 68

Ok phew one last question left, i really appreciate all the help man (:.
http://gyazo.com/5328a5976af86524e1292cc261061266

Answer 69

If that's ok with you

Answer 70

diameter = 20
radius = ?

Answer 71

radius = 10

Answer 72

Full circle = 360
if you cut it into 20 pieces like above, what would be the angle at center ?