I need help with both | Mathematics | Page 1

warm nova Nov 19, 2023, 3:12 AM

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I literally have ZERO idea

dusky shadowBOT Nov 19, 2023, 3:12 AM

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warm nova I literally have ZERO idea

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reef dune Nov 19, 2023, 3:23 AM

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warm nova I literally have ZERO idea

Do you have a list of circle theorems youve learned?

warm nova Nov 19, 2023, 3:26 AM

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Yes I know the names of the theorems but not familliar withmost

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What theorem can I use for each ques

reef dune Nov 19, 2023, 3:45 AM

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warm nova What theorem can I use for each ques

Well lemme post a list of the mall

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Which of them look similar to part 1?

warm nova Nov 19, 2023, 4:10 AM

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reef dune

Uh.. angles at the centre theorem?

reef dune Nov 19, 2023, 4:10 AM

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Yes thats a good one for half of the problem

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What else

warm nova Nov 19, 2023, 4:11 AM

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Angles at the same segment

reef dune Nov 19, 2023, 4:11 AM

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Yes

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Then thats all you need to solve the whole problem

warm nova Nov 19, 2023, 4:13 AM

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So X is 50°??

reef dune Nov 19, 2023, 4:13 AM

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Ye

warm nova Nov 19, 2023, 4:14 AM

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And y is 25°?

reef dune Nov 19, 2023, 4:15 AM

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Indeed

warm nova Nov 19, 2023, 4:15 AM

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What about 2

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What is 2 asking cryaboutit

reef dune Nov 19, 2023, 4:16 AM

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Well whats the relaionship of the radius of circle O to circle A

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Do you see how the diameter of O is the radius of A

warm nova Nov 19, 2023, 4:18 AM

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Oh ye

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The line B

reef dune Nov 19, 2023, 4:19 AM

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So you automatically know circle A is exactly twice as big as circle O right

warm nova Nov 19, 2023, 4:19 AM

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Yes

reef dune Nov 19, 2023, 4:19 AM

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And then a little trick you can pull

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Is you can draw two similar triangles

warm nova Nov 19, 2023, 4:20 AM

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Do I have to draw the triangles

reef dune Nov 19, 2023, 4:21 AM

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I mean its involved in the proof I guess

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You can also do something along the lines of

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Using the two exactly the same green triangles

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You know they ahve the same angles by the angles in a semicircle theorem

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These problems are all about using what you have and trying to come up with some silly way to morph your problem into something that you can use your tools to solve

warm nova Nov 19, 2023, 4:25 AM

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OH SO BC AND CD ARE CONGRUENT

reef dune Nov 19, 2023, 4:26 AM

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Indeed they are

warm nova Nov 19, 2023, 4:26 AM

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So what do I write in it

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despair

reef dune Nov 19, 2023, 4:27 AM

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I would apply the angles in a semicircle theorem and draw out those triangles

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Idk how formal your teacher wants the proofs to be and honestly its been like 5 or 6 years since I took geometry so Im not sure how much I could help with that part

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But the whole process of how to do it is there

warm nova Nov 19, 2023, 4:29 AM

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reef dune

So I just do this

reef dune Nov 19, 2023, 4:30 AM

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Ye basically

warm nova Nov 19, 2023, 4:30 AM

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Okay thanks omg poggers poggers poggers

#I need help with both