Homework Help with trig ident

  • Thread starter Thread starter JoshB645
  • Start date Start date
  • Tags Tags
    Homework Trig
Click For Summary

Homework Help Overview

The discussion revolves around finding the value of cos(arcsin u + arccos v), which involves trigonometric identities and inverse functions.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants inquire about the specific values of u and v, and whether the goal is to simplify the expression. There is also a suggestion to clarify the completeness of the original problem statement.

Discussion Status

The discussion is ongoing, with some participants offering guidance on using trigonometric identities to approach the problem. Multiple interpretations of the problem's requirements are being explored.

Contextual Notes

There are indications that the original poster may not have provided complete information regarding the variables involved, and there are reminders about formatting issues when posting.

JoshB645
Messages
2
Reaction score
0

Homework Statement


Find the value of cos(arcsin u + arccos v)?


Homework Equations





The Attempt at a Solution


 
Physics news on Phys.org
You're going to have to be a little more specific, what are u and v? Are you looking to simplify this expression? As well, when you preview a post it adds the template to your post again, so remember to delete it.
 
JoshB645 said:

Homework Statement


Find the value of cos(arcsin u + arccos v)?

i suppsoe it should be a full stop instead question mark,
btw Welcome Joshua to PF:smile:

I think you have not written the whole question.
 
Last edited:
Hello! Use cos(A+B)=cosAcosB-sinAsinB

Then, use:
cos[arcsin(x)]=√1-x2
sin[arccos(x)]=√1-x2
 

Similar threads

Replies
54
Views
4K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
21
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K