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2k For Whoever Can Solve This Asap by phenomental40(m): 3:14pm On Aug 09, 2020
I thought I was good in cyclic geometry till I found this. Any way am offering the sum of 2000 thousand naira to anybody that can help me solve it to the answer, the first to get it solved get the alert

Re: 2k For Whoever Can Solve This Asap by Mrshape: 3:17pm On Aug 09, 2020
phenomental40:
I thought I was good in cyclic geometry till I found this. Any way am offering the sum of 2000 thousand naira to anybody that can help me solve it to the answer
Solution loading
Re: 2k For Whoever Can Solve This Asap by phenomental40(m): 3:26pm On Aug 09, 2020
Mrshape:
Solution loading
anxiously waiting
Re: 2k For Whoever Can Solve This Asap by Agbogashi: 3:32pm On Aug 09, 2020
140°
Re: 2k For Whoever Can Solve This Asap by peppo4live: 3:34pm On Aug 09, 2020
126 degree
Re: 2k For Whoever Can Solve This Asap by Emary(f): 3:39pm On Aug 09, 2020
72 Degrees.

ODC =OCD since they are both radii of the circle.

The angles in the triangle =180 degrees so
ODC = 70 degrees
OCD = 70 degrees therefore
DOC = 40 degrees

AOC = 360 - (212 + 40) = 360 -252 = 108 degrees

Since ABC is opp AOC in a cyclical quadrilateral, they must add up to 180 degrees so 180 -108=72 degrees.

9 Likes 2 Shares

Re: 2k For Whoever Can Solve This Asap by Abudu2000(m): 3:40pm On Aug 09, 2020
Hahaha the 140 guy came close but its ***141**

DOC=40
AOC=108

OAB=71
ODCB is a parallelogram

BOC=CBO~ 70

BCO=40

Final ans =71+70=141
Re: 2k For Whoever Can Solve This Asap by peppo4live: 3:42pm On Aug 09, 2020
OCD = 70 (isosceles triangle)

OCD + ODC + x = 180
70 + 70 + x = 180
140 + x = 180
X = 40

212 + 40 = 252 ( angle at centre)

ABC = 252/2 (angle at centre is twice angle at segment

ABC = 126 degree

2 Likes

Re: 2k For Whoever Can Solve This Asap by Mrshape: 3:50pm On Aug 09, 2020
peppo4live:
OCD = 70 (isosceles triangle)

OCD + ODC + x = 180
70 + 70 + x = 180
140 + x = 180
X = 40

212 + 40 = 252 ( angle at centre)

ABC = 252/2 (angle at centre is twice angle at segment

ABC = 126 degree

no one said it isoceles triangle
Re: 2k For Whoever Can Solve This Asap by Emary(f): 3:52pm On Aug 09, 2020
Mrshape:


no one said it isoceles triangle

It is because 2 sides are radii so they are equal.

2 Likes

Re: 2k For Whoever Can Solve This Asap by phenomental40(m): 3:53pm On Aug 09, 2020
peppo4live:
OCD = 70 (isosceles triangle)

OCD + ODC + x = 180
70 + 70 + x = 180
140 + x = 180
X = 40

212 + 40 = 252 ( angle at centre)

ABC = 252/2 (angle at centre is twice angle at segment

ABC = 126 degree
peppo4live correct DM me your account number expect alert of 2k tomorrow

7 Likes 1 Share

Re: 2k For Whoever Can Solve This Asap by Mrshape: 3:54pm On Aug 09, 2020
Emary:


It is because 2 sides are radii so they are equal.
You are correct
Re: 2k For Whoever Can Solve This Asap by doggedemmy(m): 3:55pm On Aug 09, 2020
phenomental40:
I thought I was good in cyclic geometry till I found this. Any way am offering the sum of 2000 thousand naira to anybody that can help me solve it to the answer, the first to get it solved get the alert
Re: 2k For Whoever Can Solve This Asap by Abudu2000(m): 3:56pm On Aug 09, 2020
peppo4live:
OCD = 70 (isosceles triangle)

OCD + ODC + x = 180
70 + 70 + x = 180
140 + x = 180
X = 40

212 + 40 = 252 ( angle at centre)

ABC = 252/2 (angle at centre is twice angle at segment

ABC = 126 degree
this is terribly wrong hahahaha u can't just keep assuming everything inside is a absosceles or not when there is no indication there but it is what it is lol.
Re: 2k For Whoever Can Solve This Asap by Emary(f): 3:57pm On Aug 09, 2020
phenomental40:
peppo4live correct DM me your account number expect alert of 2k tomorrow

Yes, he's correct. I realized it wasn't a cyclical quad actually. Thanks for tasking my brain!

2 Likes

Re: 2k For Whoever Can Solve This Asap by Abudu2000(m): 3:58pm On Aug 09, 2020
phenomental40:
peppo4live correct DM me your account number expect alert of 2k tomorrow
and how do u know he's right?? We engineers eat things like these even in our dream.

1 Like

Re: 2k For Whoever Can Solve This Asap by phenomental40(m): 4:05pm On Aug 09, 2020
Emary:
72 Degrees.

ODC =OCD since they are both radii of the circle.

The angles in the triangle =180 degrees so
ODC = 70 degrees
OCD = 70 degrees therefore
DOC = 40 degrees

AOC = 360 - (212 + 40) = 360 -252 = 108 degrees

Since ABC is opp AOC in a cyclical quadrilateral, they must add up to 180 degrees so 180 -108=72 degrees.
emary you tried well at the starting but missed when you misuse the therom

1 Like

Re: 2k For Whoever Can Solve This Asap by phenomental40(m): 4:10pm On Aug 09, 2020
Mrshape:

Solution loading
I really thought you would be the first to give me the right answer , nice try , OC and OD are both radii which make the triangle isosceles

1 Like

Re: 2k For Whoever Can Solve This Asap by peppo4live: 4:28pm On Aug 09, 2020
phenomental40:
peppo4live correct DM me your account number expect alert of 2k tomorrow

Account number: 0054093485
Bank: Access
Re: 2k For Whoever Can Solve This Asap by boogie2910: 4:33pm On Aug 09, 2020
78
Re: 2k For Whoever Can Solve This Asap by phenomental40(m): 4:34pm On Aug 09, 2020
peppo4live:

Account number: 0054093485 Bank: Access
OK noon tomorrow 2000 naira
Re: 2k For Whoever Can Solve This Asap by peppo4live: 4:49pm On Aug 09, 2020
phenomental40:
OK noon tomorrow 2000 naira
Okay.... Thanks
Re: 2k For Whoever Can Solve This Asap by galantjoe(m): 5:53pm On Aug 09, 2020
peppo4live:
OCD = 70 (isosceles triangle)

OCD + ODC + x = 180
70 + 70 + x = 180
140 + x = 180
X = 40

212 + 40 = 252 ( angle at centre)

ABC = 252/2 (angle at centre is twice angle at segment

ABC = 126 degree

You got it
It is very important to use circle theorem to solve this kind problem

1 Like

Re: 2k For Whoever Can Solve This Asap by Nobody: 6:25pm On Aug 09, 2020
God of maths, where art thou in my life?? Lol...

Kudos to the guy that got it though. He tried.

2 Likes

Re: 2k For Whoever Can Solve This Asap by Sofistcatdmoron: 6:42pm On Aug 09, 2020
Emary:
72 Degrees.

ODC =OCD since they are both radii of the circle.

The angles in the triangle =180 degrees so
ODC = 70 degrees
OCD = 70 degrees therefore
DOC = 40 degrees

AOC = 360 - (212 + 40) = 360 -252 = 108 degrees

Since ABC is opp AOC in a cyclical quadrilateral, they must add up to 180 degrees so 180 -108=72 degrees.
Lies, abc is greater than 72degrees,
I cant be less than 100plus
Re: 2k For Whoever Can Solve This Asap by Kylekent59: 6:51pm On Aug 09, 2020
Gonna try later kinda busy

I got 126°

5 Likes

Re: 2k For Whoever Can Solve This Asap by peppo4live: 7:07pm On Aug 09, 2020
Brachaa:
God of maths, where art thou in my life?? Lol...

Kudos to the guy that got it though. He tried.
Thanks

1 Like

Re: 2k For Whoever Can Solve This Asap by peppo4live: 7:08pm On Aug 09, 2020
galantjoe:


You got it
It is very important to use circle theorem to solve this kind problem

Thanks

1 Like

Re: 2k For Whoever Can Solve This Asap by Nobody: 7:10pm On Aug 09, 2020
peppo4live:

Thanks

You're welcome.
Re: 2k For Whoever Can Solve This Asap by Folzye(m): 10:24pm On Aug 09, 2020
72° QED.. I did not even lift a pen.
Re: 2k For Whoever Can Solve This Asap by phenomental40(m): 10:32pm On Aug 09, 2020
Folzye:
72° QED.. I did not even lift a pen.
I noticed
Re: 2k For Whoever Can Solve This Asap by Malawian(m): 10:42pm On Aug 09, 2020
Will this maths solve my ongoing financial problems?

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