MHB Determine the unknown angle (using the sine law)

  • Thread starter Thread starter eleventhxhour
  • Start date Start date
  • Tags Tags
    Angle Law Sine
eleventhxhour
Messages
73
Reaction score
0
View attachment 2479

So using the sine law, I found that Θ = 68 degrees. And the I found that the other possibility of Θ would be 112 degrees (180 - 68 = 112). However, the textbook says that the answers are Θ = 68 and Θ = 23. What did I do wrong?

Thanks.
 

Attachments

  • 4b.png
    4b.png
    3 KB · Views: 86
Mathematics news on Phys.org
I agree with your result, rounded to the nearest degree. You did everything correctly. :D
 
MarkFL said:
I agree with your result, rounded to the nearest degree. You did everything correctly. :D

Alright, thanks! (:
 

Thread 'What Exactly is Dirac’s Delta Function? - Insight'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...
View full post »

Thread 'Fermat's Last Theorem'

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...
View full post »

Thread 'Useless continued fraction for 1'

I'm interested to know whether the equation $$1 = 2 - \frac{1}{2 - \frac{1}{2 - \cdots}}$$ is true or not. It can be shown easily that if the continued fraction converges, it cannot converge to anything else than 1. It seems that if the continued fraction converges, the convergence is very slow. The apparent slowness of the convergence makes it difficult to estimate the presence of true convergence numerically. At the moment I don't know whether this converges or not.
View full post »

Similar threads

A How Does U(1) Double-Cover SO(2) for a Specified Angle?
Replies
2
Views
2K
I Can the same argument be used for both radians and degrees in the sine function?
Replies
3
Views
2K
MHB Which angle has a larger cosine value?
Replies
6
Views
2K
MHB Where Did I Go Wrong in Calculating the Value of x in These Triangle Problems?
Replies
3
Views
2K
Angle of Depression Help: Using the Sine Rule to Solve for Unknown Angles
Replies
5
Views
2K
Finding the angle between two vectors
Replies
2
Views
1K
MHB Determining all values of Θ (gr. 11 math)
Replies
1
Views
2K
Torque on a sign hung by a hinge
Replies
3
Views
583
B Why does the trigonometry of obtuse angles use ref angles?
Replies
10
Views
2K
B Cosine or Sine of (angle+angle) always equal to 1?
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top