Single Trigonometric Functions ( trig identities)

  • Thread starter imxaxpunk
  • Start date
  • #1
imxaxpunk
2
0

Homework Statement



Cos^2x-Sin^2x/2 SinxCosx



The Attempt at a Solution



I changed cos^2x to 1- sin^2x

which then the equation was 1- s sin^2x/2snxcosx and i have no idea how to make this a single trig. function
 

Answers and Replies

  • #2
rock.freak667
Homework Helper
6,223
31
If you can't see it immediately then, what is 1-2sin2x the same as? What is 2sinxcosx the same as?

Hint: Look up your double angle formulas.
 
  • #3
Superstring
119
0
**Hint**

[tex]sin(a+b)=sina \cdot cosb+sinb \cdot cosa[/tex]

What if a and b where the same number...
 

Suggested for: Single Trigonometric Functions ( trig identities)

Replies
1
Views
369
  • Last Post
Replies
6
Views
575
  • Last Post
2
Replies
55
Views
3K
Replies
1
Views
109
  • Last Post
Replies
17
Views
608
Replies
10
Views
573
Replies
2
Views
492
Replies
6
Views
573
  • Last Post
Replies
8
Views
473
Replies
4
Views
1K
Top