B Solve for x: Trigonometry Equation

  • B
  • Thread starter Thread starter Eugen
  • Start date Start date
  • Tags Tags
    Trignometry
AI Thread Summary
The discussion revolves around solving a trigonometric equation, specifically sin(x) / (A - cos(x)) = B, where A and B are known values. The user seeks to determine the value of x for a physics problem involving another equation: sin θ / (-2cos 20 - cos θ) = tan 20. There is a debate about whether the question is for schoolwork, with some participants suggesting it should be posted in the Homework Help forums due to its academic nature. The user admits to lacking formal training in physics and struggles with trigonometric equations. The conversation emphasizes the importance of following forum rules for academic inquiries.
Eugen
Messages
22
Reaction score
1
While solving a problem I arrived at this equation:
sin(x) / ( A - cos(x) ) = B

A and B are known values. Is it possible to get x?
 
Mathematics news on Phys.org
Eugen said:
While solving a problem I arrived at this equation:
sin(x) / ( A - cos(x) ) = B

A and B are known values. Is it possible to get x?
Is this a schoolwork question? What is the context of the problem you are wanting to solve?
 
I'm trying to solve a physics problem which asks the value of an angle. The equation is this:

sin θ / ( -2cos 20 - cos θ) = tan 20
 
Eugen said:
I'm trying to solve a physics problem which asks the value of an angle. The equation is this:

sin θ / ( -2cos 20 - cos θ) = tan 20
You did not answer my question directly. You know the PF rules. Is this question for schoolwork? If not, why are you a working physicist who cannot figure this out?
 
Oh, no, I don't have any formal training in physics (or math). :)) I'm just trying to resolve a physics problem and I always get stuck in trigonometry equations. So it's not schoolwork I guess.
 
Eugen said:
Oh, no, I don't have any formal training in physics (or math). :)) I'm just trying to resolve a physics problem and I always get stuck in trigonometry equations. So it's not schoolwork I guess.
But it is still schoolwork-like, so the PF rules require that you post this in the Homework Help forums, and fill out the HH Template. That includes you writing out what you think the Relevant Equations are, and showing your Attempt at the Solution. That is how the PF works.
 

Thread 'Non-orthogonal bases'

Suppose ,instead of the usual x,y coordinate system with an I basis vector along the x -axis and a corresponding j basis vector along the y-axis we instead have a different pair of basis vectors ,call them e and f along their respective axes. I have seen that this is an important subject in maths My question is what physical applications does such a model apply to? I am asking here because I have devoted quite a lot of time in the past to understanding convectors and the dual...
View full post »

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 »

Similar threads

B To calculate the polar unit vectors using rotated coordinates
Replies
1
Views
2K
B How Do You Derive the Formula for sin(x-y)?
Replies
5
Views
2K
MHB Solving Trig Identity: Sin[1/2 sin^−1 (x)] = 1/2 X (sqr(1+x) –sqr(1-x))
Replies
2
Views
1K
MHB Linear combination of sine and cosine function
Replies
3
Views
1K
I Transforming coordinates between Cartesian and spherical
Replies
1
Views
2K
MHB Solving trig equation cos(x)=sin(x) + 1/√3
Replies
3
Views
3K
B A symmetric problem has an asymmetric solution - why?
Replies
21
Views
2K
MHB Is this Trigonometric Expression a Constant Function of x?
Replies
2
Views
1K
B How is it that law of sines does not work in this exercise?
2
Replies
70
Views
5K
B Solutions to systems of equations
Replies
4
Views
1K

Hot Threads

Recent Insights

Back
Top