# Trigonometry Forum

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

1. ### Compound angle formula help

• Replies: 2
• Views: 609
Jul 6th 2009, 06:32 AM
2. ### tan cot sec

• Replies: 3
• Views: 504
Jul 6th 2009, 03:31 AM
3. ### Two electricity pylons P and Q are 550m apart on the same side of a river. .(continue

• Replies: 2
• Views: 444
Jul 6th 2009, 02:04 AM
4. ### Is this the correct area of this triangle?

• Replies: 9
• Views: 570
Jul 6th 2009, 01:06 AM
5. ### What is the length from B to C? What is the area of triangle?

• Replies: 3
• Views: 567
Jul 5th 2009, 10:57 PM
6. ### Inverse trigonometric function

• Replies: 2
• Views: 480
Jul 5th 2009, 10:00 PM
7. ### Sine/ Cosine Rule Problems

• Replies: 5
• Views: 699
Jul 5th 2009, 06:42 PM
8. ### Having trouble with these 5 trig exercises

• Replies: 9
• Views: 715
Jul 5th 2009, 02:39 PM
9. ### [SOLVED] Solving trig equations

• Replies: 2
• Views: 469
Jul 5th 2009, 12:49 PM
10. ### simple trig identities

• Replies: 7
• Views: 471
Jul 5th 2009, 07:27 AM
11. ### Angular velocity

• Replies: 3
• Views: 2,358
Jul 5th 2009, 05:41 AM
12. ### Show that the area of the large square in the diagram can be written as (x+y)², and..

• Replies: 4
• Views: 688
Jul 5th 2009, 03:00 AM
13. ### Prove that

• Replies: 2
• Views: 469
Jul 4th 2009, 09:41 AM
14. ### [SOLVED] Trig equation

• Replies: 10
• Views: 556
Jul 4th 2009, 08:38 AM
15. ### Prove that

• Replies: 1
• Views: 262
Jul 4th 2009, 06:19 AM
16. ### Identities

• Replies: 1
• Views: 545
Jul 3rd 2009, 10:32 PM
17. ### Some Trig Help: Find the exact value of cos(−5pi/12)

• Replies: 2
• Views: 6,648
Jul 3rd 2009, 04:11 PM
18. ### Solution and Deduction

• Replies: 9
• Views: 510
Jul 3rd 2009, 12:14 PM
19. ### [SOLVED] Value of sin2x and cos2x when tanx=5/3

• Replies: 11
• Views: 2,884
Jul 3rd 2009, 06:07 AM
20. ### bearing problems

• Replies: 3
• Views: 2,501
Jul 3rd 2009, 05:38 AM
21. ### [SOLVED] (7cosx+5sinx)²=Acos2x+Bsin2x+C

• Replies: 3
• Views: 1,175
Jul 3rd 2009, 03:06 AM
22. ### Solving equations

• Replies: 7
• Views: 500
Jul 3rd 2009, 02:59 AM
23. ### Proving an identity

• Replies: 3
• Views: 741
Jul 2nd 2009, 09:08 PM
24. ### Prove that

• Replies: 1
• Views: 427
Jul 2nd 2009, 07:45 PM
25. ### How to work out the angle between a Rope anchor system

• Replies: 3
• Views: 1,090
Jul 2nd 2009, 07:12 PM
26. ### trig

• Replies: 1
• Views: 355
Jul 2nd 2009, 01:03 AM
27. ### cos2pi

• Replies: 1
• Views: 1,187
Jul 1st 2009, 11:35 PM
28. ### [SOLVED] I cant solve this one at all.

• Replies: 0
• Views: 563
Jul 1st 2009, 12:09 PM

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