# Trigonometry Forum

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

1. ### DeMoivre's Theorem

• Replies: 1
• Views: 668
Dec 15th 2008, 10:33 AM
2. ### Proof by induction stuck on a sum:help:

• Replies: 2
• Views: 590
Dec 15th 2008, 10:27 AM
3. ### Modulus and Argument

• Replies: 2
• Views: 1,009
Dec 15th 2008, 08:08 AM
4. ### Solving trig

• Replies: 2
• Views: 3,535
Dec 15th 2008, 04:37 AM
5. ### [SOLVED] Trig problems

• Replies: 1
• Views: 543
Dec 15th 2008, 04:19 AM
6. ### Prove tan^4 + tan^2 + 1 = 1 - Sin^2 Cos^2

• Replies: 3
• Views: 758
Dec 14th 2008, 07:58 PM
7. ### Trig Expressions problem

• Replies: 6
• Views: 531
Dec 14th 2008, 11:42 AM
8. ### Trig problem

• Replies: 1
• Views: 373
Dec 14th 2008, 10:33 AM
9. ### Trigonometric Equations

• Replies: 2
• Views: 341
Dec 14th 2008, 09:16 AM
10. ### i need to answer a question related to trigonometry urgently

• Replies: 2
• Views: 482
Dec 14th 2008, 08:59 AM
11. ### trig questions

• Replies: 6
• Views: 504
Dec 14th 2008, 08:55 AM

• Replies: 1
• Views: 1,015
Dec 14th 2008, 03:53 AM

• Replies: 1
• Views: 2,351
Dec 14th 2008, 03:41 AM
14. ### How do I use reference angles to find these answers?

• Replies: 1
• Views: 614
Dec 14th 2008, 03:23 AM
15. ### Analytic Trig question 3

• Replies: 1
• Views: 360
Dec 14th 2008, 03:08 AM
16. ### Trig word problem

• Replies: 1
• Views: 606
Dec 14th 2008, 01:00 AM
17. ### urgent triangle help!

• Replies: 3
• Views: 380
Dec 13th 2008, 12:52 PM
18. ### trig word problem

• Replies: 2
• Views: 640
Dec 11th 2008, 08:33 PM
19. ### cos(x) to sec(x)

• Replies: 4
• Views: 857
Dec 11th 2008, 07:41 PM
20. ### trigonometry

• Replies: 3
• Views: 864
Dec 11th 2008, 06:54 PM
21. ### Where am I messing up? (Proof) [cos3x = 4cos^3x-3cosx]

• Replies: 2
• Views: 3,291
Dec 11th 2008, 03:42 PM
22. ### find the cube roots

• Replies: 5
• Views: 744
Dec 11th 2008, 03:25 PM
23. ### Compound Angle Identities

• Replies: 4
• Views: 1,227
Dec 11th 2008, 02:11 PM
24. ### trigonometry recatangular to polar form

• Replies: 1
• Views: 480
Dec 11th 2008, 02:06 AM
25. ### Verify that √((1-cosx)/(1+cosx)) = (1-cosx)/|sinx|

• Replies: 3
• Views: 12,255
Dec 10th 2008, 08:39 PM
26. ### Trig Proof/Verification : cot 2x = (1+cos4x)/sin4x

• Replies: 3
• Views: 3,698
Dec 10th 2008, 08:25 PM

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