# Trigonometry Forum

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

1. ### trig equation involving tan

• Replies: 4
• Views: 541
Mar 15th 2012, 02:53 PM
2. ### Exact solutions with radians

• Replies: 11
• Views: 2,155
Mar 15th 2012, 05:33 AM
3. ### Calculate the starting point of my vector in relation to COS ???

• Replies: 0
• Views: 348
Mar 14th 2012, 10:52 AM

• Replies: 2
• Views: 609
Mar 13th 2012, 07:29 PM
5. ### Proof, series from k=1 to n of cos(2*pi*k/(2n+1)) equals -1/2

• Replies: 0
• Views: 1,387
Mar 12th 2012, 11:15 AM
6. ### Double angle formula

• Replies: 3
• Views: 649
Mar 12th 2012, 05:44 AM
7. ### Help with identities?

• Replies: 1
• Views: 353
Mar 11th 2012, 11:45 AM
8. ### Proving identities..

• Replies: 3
• Views: 488
Mar 8th 2012, 02:27 PM
9. ### Convert bearing range

• Replies: 1
• Views: 611
Mar 8th 2012, 10:40 AM
10. ### Inverse function help

• Replies: 1
• Views: 438
Mar 7th 2012, 12:34 AM

• Replies: 1
• Views: 699
Mar 6th 2012, 04:44 PM
12. ### Trigonometric Identity

• Replies: 4
• Views: 978
Mar 5th 2012, 10:28 PM
13. ### Trigonometry problem concerning compound angles

• Replies: 1
• Views: 844
Mar 5th 2012, 09:24 PM
14. ### Identity Problem

• Replies: 2
• Views: 665
Mar 2nd 2012, 05:51 PM
15. ### Angle between two points in all four quadrants?

• Replies: 0
• Views: 813
Feb 29th 2012, 09:22 PM
16. ### trig graphs

• Replies: 3
• Views: 470
Jan 17th 2012, 01:05 AM
17. ### [SOLVED] If sec =2, find the possible values of tan theta

• Replies: 6
• Views: 895
Jan 16th 2012, 05:04 PM
18. ### Formula product of sines

• Replies: 2
• Views: 1,237
Jan 15th 2012, 07:44 AM
19. ### Please check proof of identity

• Replies: 2
• Views: 587
Jan 14th 2012, 04:49 PM
20. ### sinusoidal graph axis

• Replies: 2
• Views: 538
Jan 14th 2012, 11:20 AM
21. ### Solving Hyperbolic Equations for t

• Replies: 3
• Views: 804
Jan 13th 2012, 04:17 PM
22. ### [SOLVED] # of solutions for triangles

• Replies: 6
• Views: 8,973
Jan 11th 2012, 10:38 PM
23. ### Graph of Trigo Func.

• Replies: 1
• Views: 497
Jan 10th 2012, 09:59 AM
24. ### [SOLVED] spherical triangle problem

• Replies: 1
• Views: 1,117
Jan 10th 2012, 09:30 AM
25. ### Application of a Sum Formula

• Replies: 4
• Views: 1,302
Jan 6th 2012, 06:01 PM

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