# Trigonometry Forum

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

1. ### Complex numbers problem

• Replies: 1
• Views: 1,098
Apr 18th 2008, 01:48 AM
2. ### 7 problems on referance angles, radian measures, etc!

• Replies: 2
• Views: 1,266
Apr 17th 2008, 10:34 PM
3. ### trig verify the identify

• Replies: 1
• Views: 530
Apr 17th 2008, 06:12 PM
4. ### Finding zeroes for trig functions

• Replies: 1
• Views: 2,053
Apr 17th 2008, 05:35 PM
5. ### sum to product formula

• Replies: 1
• Views: 834
Apr 17th 2008, 04:45 PM
6. ### Trig. Identities?

• Replies: 3
• Views: 462
Apr 17th 2008, 02:39 PM
7. ### [SOLVED] if cosA = 4/5; sin &lt;0; cosB = 12/13; 0&lt;B&gt;90, determine sin(A-B)

• Replies: 2
• Views: 1,671
Apr 17th 2008, 09:51 AM
8. ### [SOLVED] Prove: tan(A+45) = (1+tanA)/(1-tanA)

• Replies: 11
• Views: 3,851
Apr 17th 2008, 09:25 AM
9. ### Trig equation

• Replies: 2
• Views: 455
Apr 17th 2008, 07:37 AM
10. ### triq eqautions

• Replies: 3
• Views: 564
Apr 17th 2008, 05:54 AM
11. ### trig equations

• Replies: 1
• Views: 573
Apr 17th 2008, 04:22 AM
12. ### How Trig Cofunctions Relate to Transformations

• Replies: 6
• Views: 1,575
Apr 16th 2008, 06:53 PM
13. ### annoying complex numbers

• Replies: 2
• Views: 374
Apr 16th 2008, 02:39 PM
14. ### Trig Identities Prob

• Replies: 5
• Views: 441
Apr 16th 2008, 06:08 AM
15. ### Some trig problems from Shy Guy

• Replies: 2
• Views: 724
Apr 16th 2008, 03:53 AM
16. ### Method of Substitution! Help!

• Replies: 4
• Views: 582
Apr 15th 2008, 08:11 PM
17. ### Inverse trig functions

• Replies: 1
• Views: 693
Apr 15th 2008, 06:36 PM
18. ### Sorry....I've got one more thing I need help with....

• Replies: 8
• Views: 918
Apr 15th 2008, 05:43 PM
19. ### trigonometry

• Replies: 2
• Views: 432
Apr 15th 2008, 03:25 PM
20. ### Trigometric Identity Help

• Replies: 4
• Views: 573
Apr 15th 2008, 09:04 AM
21. ### proof

• Replies: 2
• Views: 426
Apr 14th 2008, 08:07 PM
22. ### solving trig equations

• Replies: 1
• Views: 484
Apr 14th 2008, 05:03 PM
23. ### Trigonometry, solving for between 0 and 360

• Replies: 2
• Views: 641
Apr 14th 2008, 02:39 PM
24. ### Trig Identities Help!!!!

• Replies: 2
• Views: 794
Apr 14th 2008, 11:47 AM
25. ### write tan10x in terms of tan5x (?!)

• Replies: 1
• Views: 928
Apr 13th 2008, 07:30 PM
26. ### Proving trig identities

• Replies: 2
• Views: 459
Apr 13th 2008, 02:21 PM
27. ### inverse trigonometric functions

• Replies: 6
• Views: 627
Apr 13th 2008, 09:44 AM
28. ### working out 'x' which is a side of a scalene inside a right-angle

• Replies: 4
• Views: 697
Apr 13th 2008, 07:29 AM
29. ### Trig identies

• Replies: 7
• Views: 621
Apr 13th 2008, 03:24 AM

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