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# Trigonometry Forum

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

• Replies: 2
• Views: 965
Jan 12th 2011, 01:06 PM
2. ### [Urgent] Solving Trig Equations

• Replies: 7
• Views: 736
Nov 21st 2007, 03:11 PM
3. ### [URGENT!!] Trig - Compound Angles Formulas and Cofunction Identities

• Replies: 1
• Views: 1,805
Nov 14th 2007, 08:30 PM
4. ### [Urgent - Trig] How would I prove the followin equation with double angle formulas?

• Replies: 2
• Views: 939
Nov 23rd 2007, 04:09 AM
5. ### [Trigonometric Ratios] Dividing a triangle with equal area

• Replies: 6
• Views: 1,249
Jul 11th 2010, 04:54 AM
6. ### [Trig Proof] Does this answer key make sense?

• Replies: 3
• Views: 839
Jun 30th 2013, 03:13 PM
7. ### [TEX]f(t) = \sin(\omega_1 t)+\sin(\omega_2 t)[/TEX]

• Replies: 2
• Views: 640
Aug 6th 2017, 02:28 AM
8. ### [SOLVED] What is the identity used here?

• Replies: 2
• Views: 493
Jun 5th 2009, 01:01 PM
9. ### [SOLVED] w= θ/t

• Replies: 3
• Views: 1,304
Mar 11th 2010, 12:26 AM
10. ### [SOLVED] Verifying Trig identities

• Replies: 1
• Views: 743
Feb 5th 2009, 05:16 PM
11. ### [SOLVED] Verify that the equation is an identity.

• Replies: 5
• Views: 1,056
Oct 7th 2008, 07:11 PM
12. ### [SOLVED] Verify that each trigonometric equation is an identity.

• Replies: 6
• Views: 732
Mar 21st 2010, 08:17 PM
13. ### [SOLVED] Velocities help

• Replies: 3
• Views: 812
Oct 4th 2009, 10:36 PM
14. ### [SOLVED] vector Problem

• Replies: 3
• Views: 994
May 25th 2008, 01:16 PM
15. ### [SOLVED] Value of trigonometric expression?

• Replies: 2
• Views: 770
Sep 26th 2008, 09:33 AM
16. ### [SOLVED] Value of sin2x and cos2x when tanx=5/3

• Replies: 11
• Views: 3,860
Jul 3rd 2009, 06:07 AM
17. ### [SOLVED] Use these equalities to derive the following trig identities.

• Replies: 1
• Views: 2,391
Aug 19th 2009, 06:52 PM
18. ### [SOLVED] Urgentt HELP! 3D Trigonometry Problem

• Replies: 8
• Views: 1,061
Mar 7th 2009, 02:13 PM
19. ### [SOLVED] Two Trig Identitites

• Replies: 3
• Views: 593
Feb 1st 2009, 12:30 PM
20. ### [SOLVED] Trigonometry Problem 2

• Replies: 1
• Views: 787
Apr 19th 2009, 10:04 AM
21. ### [SOLVED] Trigonometry Help!?

• Replies: 6
• Views: 971
Mar 29th 2008, 10:10 AM
22. ### [SOLVED] Trigonometry help!

• Replies: 1
• Views: 770
Jan 14th 2009, 10:15 AM
23. ### [SOLVED] [SOLVED] Trigonometry Function-finding the amplitude &amp; vertical displacement.

• Replies: 1
• Views: 3,628
Feb 7th 2008, 04:45 PM
24. ### [SOLVED] trigonometry forum- proofs

• Replies: 6
• Views: 663
May 18th 2009, 06:46 PM
25. ### [SOLVED] Trigonometry

• Replies: 14
• Views: 827
Apr 22nd 2008, 12:16 PM
26. ### [SOLVED] Trigonometry

• Replies: 3
• Views: 426
Apr 22nd 2008, 08:50 AM
27. ### [SOLVED] Trigonometry

• Replies: 2
• Views: 462
Apr 22nd 2008, 10:17 AM
28. ### [SOLVED] Trigonometric problem

• Replies: 5
• Views: 701
Mar 16th 2010, 07:51 PM

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# how to provr a point is co planar

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