# Trigonometry Forum

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

1. ### Can I express cos(pi/7) with radicals?

• Replies: 2
• Views: 1,727
Jan 23rd 2009, 04:44 AM
2. ### Trig Identity

• Replies: 7
• Views: 825
Jan 22nd 2009, 02:16 PM
3. ### Hyperbolic Trig Proof Help

• Replies: 2
• Views: 661
Jan 22nd 2009, 12:32 PM
4. ### what formula should be use in these trigonometry problems?

• Replies: 1
• Views: 332
Jan 22nd 2009, 08:39 AM
5. ### how to start/ simplify these trigonometric functions

• Replies: 5
• Views: 383
Jan 22nd 2009, 07:46 AM
6. ### trigonometric intervals??

• Replies: 1
• Views: 643
Jan 22nd 2009, 07:01 AM
7. ### Triangles

• Replies: 1
• Views: 810
Jan 22nd 2009, 05:12 AM
8. ### identity

• Replies: 1
• Views: 601
Jan 21st 2009, 09:40 PM
9. ### Cos Angle problem

• Replies: 1
• Views: 603
Jan 21st 2009, 08:41 PM
10. ### Solving Identities

• Replies: 4
• Views: 649
Jan 21st 2009, 07:51 PM
11. ### How would you solve this equation?

• Replies: 2
• Views: 1,643
Jan 21st 2009, 07:29 PM
12. ### Trigonometric Equation

• Replies: 2
• Views: 404
Jan 21st 2009, 07:09 PM
13. ### more trig

• Replies: 3
• Views: 304
Jan 21st 2009, 06:32 PM
14. ### Trigonometric Ratio question

• Replies: 5
• Views: 539
Jan 21st 2009, 04:31 PM
15. ### percentage difference?

• Replies: 1
• Views: 458
Jan 21st 2009, 03:55 PM
16. ### trig 2

• Replies: 2
• Views: 328
Jan 21st 2009, 03:49 PM
17. ### Determining The Principle Angle Help!?!

• Replies: 2
• Views: 695
Jan 21st 2009, 12:23 PM
18. ### Trig Identity Help

• Replies: 3
• Views: 598
Jan 20th 2009, 08:56 PM
19. ### Need help on a cos/sin explanation problem!

• Replies: 5
• Views: 1,000
Jan 20th 2009, 08:18 PM
20. ### Trig help

• Replies: 2
• Views: 678
Jan 20th 2009, 09:41 AM
21. ### Help me with this full trigonometric equation?

• Replies: 1
• Views: 547
Jan 20th 2009, 08:35 AM
22. ### Sine Curves

• Replies: 8
• Views: 364
Jan 20th 2009, 02:53 AM
23. ### Analytic Trig- Sin, Cos, Tan

• Replies: 6
• Views: 885
Jan 19th 2009, 02:54 PM

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