# Trigonometry Forum

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

1. ### Sin in terms of tan.

• Replies: 3
• Views: 610
Feb 28th 2009, 03:46 AM
2. ### ? Each time you see (cos(2x))^2, replace it with 1/2 + 1/2cos(4x) ?

• Replies: 2
• Views: 1,659
Feb 27th 2009, 04:25 PM
3. ### Altitude of an Equilateral triangle?

• Replies: 4
• Views: 1,813
Feb 27th 2009, 10:20 AM
4. ### Trig Double Angle Identities

• Replies: 1
• Views: 893
Feb 27th 2009, 08:14 AM
5. ### Trigonometry word problem

• Replies: 3
• Views: 681
Feb 26th 2009, 07:58 PM
6. ### Simple trigonometric equation can you help?

• Replies: 1
• Views: 549
Feb 26th 2009, 02:07 PM
7. ### a limit

• Replies: 2
• Views: 503
Feb 26th 2009, 10:26 AM
8. ### More Trig Equations

• Replies: 1
• Views: 371
Feb 26th 2009, 09:10 AM
9. ### Trigonometric Integration

• Replies: 2
• Views: 478
Feb 26th 2009, 04:49 AM
10. ### Simplify Trig expressions

• Replies: 1
• Views: 475
Feb 25th 2009, 02:51 PM
11. ### Sinister Sine

• Replies: 7
• Views: 522
Feb 25th 2009, 11:04 AM
12. ### Double Angle Identity

• Replies: 8
• Views: 540
Feb 25th 2009, 07:44 AM
13. ### Dreaded identities and double angle formulae

• Replies: 1
• Views: 377
Feb 25th 2009, 07:35 AM
14. ### [SOLVED] Double angle identities

• Replies: 3
• Views: 677
Feb 25th 2009, 02:05 AM
15. ### roots between 100π and 1000π Praxis II

• Replies: 1
• Views: 865
Feb 24th 2009, 06:46 PM
16. ### Trig Equations

• Replies: 1
• Views: 882
Feb 24th 2009, 10:08 AM
17. ### solve 8 sin (theta)-15cos(theta)=8.5

• Replies: 1
• Views: 1,419
Feb 24th 2009, 07:37 AM
18. ### Trig Functions & Unit Circle

• Replies: 1
• Views: 1,401
Feb 23rd 2009, 10:37 PM
19. ### Simplifying Trigonometric Equations

• Replies: 2
• Views: 593
Feb 23rd 2009, 03:32 PM
20. ### complex number polar form

• Replies: 1
• Views: 647
Feb 23rd 2009, 10:26 AM
21. ### establishing identities?

• Replies: 3
• Views: 586
Feb 23rd 2009, 05:55 AM
22. ### inverse functions in equations

• Replies: 4
• Views: 500
Feb 23rd 2009, 01:55 AM

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