Proving the Identity: sinA/(1+cosA)=tan(A/2)

  • Thread starter Thread starter brandon26
  • Start date Start date
  • Tags Tags
    Identity
Click For Summary

Homework Help Overview

The discussion revolves around proving the trigonometric identity sinA / (1+cosA) = tan(A/2). The original poster expresses difficulty in approaching the problem.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Some participants suggest using the double angle formula for cosine, while others express confusion regarding its application.

Discussion Status

The discussion appears to have shifted, with one participant indicating that the problem has been resolved, though no further details or consensus are provided.

Contextual Notes

There is an indication of confusion regarding the application of trigonometric identities, particularly the double angle formulas.

brandon26
Messages
107
Reaction score
0
Prove the identity:

sinA / (1+cosA) = tan (A/2).

Im going no where with this, please help?:confused: :confused:
 
Physics news on Phys.org
use the double angle formula for cos2ø.
 
Sorry I don't understand. And I am trying to apply the double angle formulae but I am just getting confused.
 
Problem solved...No need to reply
 

Similar threads

How to prove this trigonometry equation?
  • · Replies 8 ·
Replies
8
Views
3K
Further Trigonometry Identity (Proving question)
  • · Replies 1 ·
Replies
1
Views
2K
Prove : (1+cosA - sinA)/(1+cosA + sinA) = secA - tanA
  • · Replies 9 ·
Replies
9
Views
13K
Proving: cosA/(1-tanA) + sinA/(1-cotA) = sinA + cosA
  • · Replies 6 ·
Replies
6
Views
2K
Particle dynamics (mechanics): inclined plane, pulley, two blocks
  • · Replies 14 ·
Replies
14
Views
3K
Proving tan2A = 2tanA/1-tan^2A: A Trig Identity Example
  • · Replies 1 ·
Replies
1
Views
4K
How to get from tan(a)/tan(b) to sin(a)/sin(b) or something simmilar
  • · Replies 25 ·
Replies
25
Views
4K
Solve Mcos^2(x) + Ncos(x) – 3 = 0 for M & N | Trig Help
  • · Replies 4 ·
Replies
4
Views
3K
Trying to prove a trig identity
  • · Replies 4 ·
Replies
4
Views
4K
Changing ##\tan\frac{x}{2}## to ##\cos x## for a proof
  • · Replies 8 ·
Replies
8
Views
3K