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Nairaland Forum / Nairaland / General / Education / If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) (33930 Views)
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Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mitocyan: 7:14am On Apr 16, 2019 |
dacool1: Nice try but this rule only applies to regular polygons. |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 7:40am On Apr 16, 2019 |
Mitocyan:There is litrary no know way to do summation of more than three trigonometry inverse, I was expecting someone to point that out. The prime relationship is only on the length of the chord, |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 7:41am On Apr 16, 2019 |
Mitocyan:It is wrong |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Valhampo(m): 7:48am On Apr 16, 2019 |
THIS forum is for news and happenings and not maths forum abeg |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by dacool1(m): 8:02am On Apr 16, 2019 |
Can you take a picture of the solution |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by iteachmaths(m): 8:59am On Apr 16, 2019 |
R=7 |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by NothingDoMe: 9:13am On Apr 16, 2019 |
ericmor:lol |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Tonylyte(m): 9:15am On Apr 16, 2019 |
Mrshape: Oga Ifada na u be this? |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Timmyspy(m): 9:50am On Apr 16, 2019 |
Next prime number = diameter.
Next prime number = 17
Diameter = 17
Radius = 17/2
R= 8.5 |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by dacool1(m): 9:52am On Apr 16, 2019 |
your solution seems wrong though. since you worked with the sector and each arc of each sector is directly proportional to the angle subtended at the centre of the circle. thus the length of the chords have a relationship with the angles thus making a ratio out of it. |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Nobody: 10:10am On Apr 16, 2019 |
Timmyspy:This your solution does not have leg |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by clems88(m): 11:01am On Apr 16, 2019 |
Op wait make ivsolve am
|
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by EazyGiant: 12:02pm On Apr 16, 2019 |
MrShape is absolutely wrong . The only person that got it right is Dacool1 . Dacool1 deserves an applause |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by EazyGiant: 12:04pm On Apr 16, 2019 |
dacool1:You're very much on point brov . 1 Like |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by EazyGiant: 12:08pm On Apr 16, 2019 |
Mrshape:This solution is wrong . The question is not as complex as u made it seems . Dacool1's solution is straight on point . U can apply his method for both regular and irregular polygon inscribe in a circle. Cheers |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by EazyGiant: 12:50pm On Apr 16, 2019 |
Solution
|
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Nobody: 1:31pm On Apr 16, 2019 |
EazyGiant:Sorry but how did you get the angles in the first place? |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by TVSA: 1:46pm On Apr 16, 2019 |
EazyGiant: how did you get the angles?
|
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by EazyGiant: 1:53pm On Apr 16, 2019 |
Darivie04:Use the same method to calculate the angles subtended by respective chords
|
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 3:04pm On Apr 16, 2019 |
Tonylyte:Yes oga slim we done carry shape come hare o |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 3:26pm On Apr 16, 2019 |
EazyGiant:This is wrong for irregular polygon my proof L=2R sin(@/2) R=5/(2sin(@/2)) R=5/(2sin(42.86/2)) R=2.5/sin(21.43) R=6.842487 That is how all the radius of the different sector will be different, which is not true for a circle, In a circle all radius at any point is equal. Thus my solution is very correct, I remain Mr Shape |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 3:28pm On Apr 16, 2019 |
EazyGiant: This is wrong for irregular polygon my proof L=2R sin(@/2) R=5/(2sin(@/2)) R=5/(2sin(42.86/2)) R=2.5/sin(21.43) R=6.842487 That is how all the radius of the different sector will be different, which is not true for a circle, In a circle all radius at any point is equal. Thus my solution is very correct, I remain Mr Shape |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 3:30pm On Apr 16, 2019 |
EazyGiant:That's not true Proof The got 7 Let me use the chord length of 5 This is wrong for irregular polygon my proof L=2R sin(@/2) R=5/(2sin(@/2)) R=5/(2sin(42.86/2)) R=2.5/sin(21.43) R=6.842487 That is how all the radius of the different sector will be different, which is not true for a circle, In a circle all radius at any point is equal. Thus my solution is very correct, I remain Mr Shape 1 Like |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 3:32pm On Apr 16, 2019 |
EazyGiant:I am very correct proof. You guys got 7 Let me use the chord length of 5 This is wrong for irregular polygon my proof L=2R sin(@/2) R=5/(2sin(@/2)) R=5/(2sin(42.86/2)) R=2.5/sin(21.43) R=6.842487 That is how all the radius of the different sector will be different, which is not true for a circle, In a circle all radius at any point is equal. Thus my solution is very correct, I remain Mr Shape |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by EazyGiant: 4:38pm On Apr 16, 2019 |
Mrshape:There will be different values of " R " becos the polygon is irregular . The substended angle with respect to each arc / chord will determine the particular " R " in question . Definite method , not trial and error Sir . I have 2 questions for U ... 1). Do you agree with the substended angles stated above for each arc / chord ? If u disagree , make ur calculation and let's see . 2). Is the 7.42 u got for R the same for all the Rs in the Polygon ? |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 6:56pm On Apr 16, 2019 |
EazyGiant:Irrespective of regular or irregular polygon inscribed in a circle the radius of the circle does not change it is a constant. (1)I agree to your ratio of( lenght of arc/total lenght of chord ) x360 for only regular polygon to get angle subtended, But this polygon is irregular, so I don't agree with your usage of this formula here it does not apply to irregular polygon (2) yes the 4.2... I got for R is same for all R in the entire circle. Hope you are convinced by this. Check on my new shape and give it a trial sir |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Tonylyte(m): 9:31am On Apr 17, 2019 |
Mrshape:Yes ooo, every shape must be solve. |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Tonylyte(m): 9:37am On Apr 17, 2019 |
Mrshape: Length of chord/total length of chords x 360 Or length of arc/total lenght of chord x 360? |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 10:06am On Apr 17, 2019 |
Tonylyte:Yes but arc lenght is not given, thus second formula don't apply here 1 Like |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by tharealest(m): 11:36am On Apr 17, 2019 |
Mitocyan: Exactly my thought |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Mrshape: 12:15pm On Apr 17, 2019 |
tharealest:If you check my first few comments I stated that u should not base your mind on prime number, the prime number is just for the length of chord, Check my other shapes and give it a trial 1 Like |
Re: If You Know Prime Numbers You Should Be Able To Solve This Shape (Photo) by Tonylyte(m): 8:40am On Apr 19, 2019 |
Mrshape: Boss! 1 Like |
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