Trig, What would this reduce to?

  • #1
TheRedDevil18
408
1

Homework Statement



cos(-225)

The Attempt at a Solution



Would it become, -cos45 ?
Just want to make sure.
 

Answers and Replies

  • #2
HallsofIvy
Science Advisor
Homework Helper
43,021
971
Are we to assume that this is 225 degrees?

If so then 225= 360- 35, NOT 45.
 
  • #3
Mentallic
Homework Helper
3,802
94
TheRedDevil18, you're correct.

225= 360- 35
That's not right, it's 225 = 360 - 135.
 

Suggested for: Trig, What would this reduce to?

Replies
1
Views
566
Replies
9
Views
783
Replies
1
Views
642
  • Last Post
Replies
17
Views
725
Replies
1
Views
480
Replies
3
Views
750
Replies
9
Views
347
  • Last Post
Replies
7
Views
755
  • Last Post
Replies
3
Views
587
Top