# Trigonometry Forum

Trigonometry Help Forum: Graphing trig expressions, identities, angles, applied questions

1. ### An Interesting Triq Question

• Replies: 4
• Views: 591
Sep 14th 2010, 03:24 AM
2. ### Trig equation

• Replies: 3
• Views: 280
Sep 13th 2010, 03:25 PM
3. ### Demonstration involving sine and cosine

• Replies: 5
• Views: 359
Sep 13th 2010, 10:05 AM
4. ### Need help with sin, cos, tan

• Replies: 3
• Views: 295
Sep 12th 2010, 07:09 PM
5. ### Angle Of Depression Question

• Replies: 2
• Views: 732
Sep 12th 2010, 06:38 AM
6. ### chaleenging one

• Replies: 2
• Views: 407
Sep 10th 2010, 04:18 AM
7. ### Trigonometry 2

• Replies: 1
• Views: 309
Sep 9th 2010, 11:26 PM
8. ### Trigonometry

• Replies: 2
• Views: 270
Sep 9th 2010, 02:17 PM
9. ### Transformations

• Replies: 0
• Views: 341
Sep 9th 2010, 11:40 AM
10. ### sin(x+30deg), why graph move to the left?

• Replies: 8
• Views: 746
Sep 9th 2010, 11:01 AM
11. ### Inverse trig domain

• Replies: 1
• Views: 462
Sep 9th 2010, 07:41 AM
12. ### Trigonometry Proof

• Replies: 4
• Views: 497
Sep 9th 2010, 02:23 AM
13. ### sin(A+B) and cos rule

• Replies: 3
• Views: 494
Sep 8th 2010, 04:31 PM
14. ### Rotation of a square on a plane

• Replies: 2
• Views: 688
Sep 8th 2010, 02:00 PM
15. ### Find SEC

• Replies: 1
• Views: 369
Sep 7th 2010, 10:46 PM
16. ### Proof that this equation is valid (have tried to solve myself many times..)

• Replies: 4
• Views: 358
Sep 7th 2010, 09:55 PM
17. ### Solution of Oblique Triangles Help

• Replies: 3
• Views: 1,353
Sep 7th 2010, 06:39 PM
18. ### Using Trigonometric Identity

• Replies: 3
• Views: 586
Sep 7th 2010, 04:21 AM
19. ### Sin and Cos

• Replies: 2
• Views: 479
Sep 6th 2010, 08:43 PM
20. ### Trigonometry and Surds

• Replies: 2
• Views: 2,086
Sep 6th 2010, 12:36 PM
21. ### What's the difference between these two trig identity problems?

• Replies: 2
• Views: 553
Sep 6th 2010, 10:03 AM
22. ### Trigonometry Distance Problems--Working with angles and sides

• Replies: 3
• Views: 1,003
Sep 5th 2010, 10:22 PM
23. ### ooh a tricky question

• Replies: 16
• Views: 1,197
Sep 5th 2010, 07:29 AM
24. ### Help with simple goniometrics

• Replies: 3
• Views: 583
Sep 5th 2010, 05:34 AM
25. ### [SOLVED] some more trig identities

• Replies: 2
• Views: 425
Sep 5th 2010, 12:55 AM
26. ### trig identities help needed

• Replies: 2
• Views: 407
Sep 4th 2010, 07:42 PM

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