MHB Solve for the angles in a triangle

  • Thread starter Thread starter gazparkin
  • Start date Start date
  • Tags Tags
    Angles Triangle
AI Thread Summary
The discussion revolves around solving for the angles in an isosceles triangle. The user initially calculated x as 30 and y as 60, assuming the triangle's base angles were equal. After further calculations, they revised their values to x = 40 and y = 80, which was confirmed as correct by another participant. The equation used was 60 + x + 2x = 180, leading to the correct angle measures. The conversation highlights the importance of verifying calculations in geometry.
gazparkin
Messages
17
Reaction score
0
Hi,

Could someone check that I'm right with this one, or put me right! I've worked the value out as

x=30 and y (2x) = 60. I've come to this as I think it's an isosceles triangle so the base angles would be equal. Am I right?

Thank you!

View attachment 9147
 

Attachments

  • Traingle 2.jpg
    Traingle 2.jpg
    9 KB · Views: 116
Mathematics news on Phys.org
60 + x + y = 180

if y = 2x ...

60 + x + 2x = 180

try again ...
 
Is it x = 40 and y =80??
 
gazparkin said:
Is it x = 40 and y =80??

Yes, that's correct.
 
catmitt98 said:
Yes, that's correct.

Thank you for your help.
 
Thread 'Video on imaginary numbers and some queries'
Hi, I was watching the following video. I found some points confusing. Could you please help me to understand the gaps? Thanks, in advance! Question 1: Around 4:22, the video says the following. So for those mathematicians, negative numbers didn't exist. You could subtract, that is find the difference between two positive quantities, but you couldn't have a negative answer or negative coefficients. Mathematicians were so averse to negative numbers that there was no single quadratic...
Thread 'Unit Circle Double Angle Derivations'
Here I made a terrible mistake of assuming this to be an equilateral triangle and set 2sinx=1 => x=pi/6. Although this did derive the double angle formulas it also led into a terrible mess trying to find all the combinations of sides. I must have been tired and just assumed 6x=180 and 2sinx=1. By that time, I was so mindset that I nearly scolded a person for even saying 90-x. I wonder if this is a case of biased observation that seeks to dis credit me like Jesus of Nazareth since in reality...
Fermat's Last Theorem has long been one of the most famous mathematical problems, and is now one of the most famous theorems. It simply states that the equation $$ a^n+b^n=c^n $$ has no solutions with positive integers if ##n>2.## It was named after Pierre de Fermat (1607-1665). The problem itself stems from the book Arithmetica by Diophantus of Alexandria. It gained popularity because Fermat noted in his copy "Cubum autem in duos cubos, aut quadratoquadratum in duos quadratoquadratos, et...

Similar threads

Back
Top