Results 1 to 4 of 4

- Jun 7th 2008, 08:42 PM #1

- Joined
- Jun 2008
- Posts
- 17

## cos35sin55 + cos55sin35

ok the answer 1 apparently because i went on hotmath.com and it explained it like this

cos35sin55 + cos55sin35

sin^2 55 + cos ^2 35 =1

ok i understand that

but cos35 and sin 55 are equal and so are cos55 and sin35

so i thought it would be like...1 + 1...i dont understand why that isn't correct.

- Jun 7th 2008, 08:49 PM #2

- Jun 7th 2008, 08:50 PM #3

- Jun 8th 2008, 06:30 AM #4

- Joined
- May 2006
- From
- Lexington, MA (USA)
- Posts
- 12,028
- Thanks
- 846

Hello, desperate_on_sunday_night!

ok the answer 1 apparently because i went on hotmath.com and it explained it like this

ok i understand that . . . . you do?

We're expected to visualize this right triangle . . .Code:* * * c * 55° * * * a * * * 35° * * * * * * * * b

. We have: .

Substitute: .

Click on a term to search for related topics.