# Trigonometry Forum

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

1. ### Integrate cos(x)cos(4x) dx

• Replies: 9
• Views: 14,092
Feb 15th 2013, 06:24 PM
2. ### Trigonometry Online Course

• Replies: 1
• Views: 597
Feb 14th 2013, 11:58 PM
3. ### Compound angles HELP!

• Replies: 2
• Views: 875
Feb 14th 2013, 05:47 PM
4. ### Double/half angle identity help!

• Replies: 2
• Views: 692
Feb 12th 2013, 09:50 PM
5. ### Simplify trig equation using identities

• Replies: 3
• Views: 1,309
Feb 10th 2013, 09:47 PM
6. ### bcos x-asinx=q asinx+bcosx=p a^2+b^2+p^2+q^2=? math genius help

• Replies: 2
• Views: 885
Feb 7th 2013, 07:44 PM
7. ### [SOLVED] What is cos(pi/9)?

• Replies: 2
• Views: 10,258
Feb 5th 2013, 06:20 PM
8. ### What methods are known for solving tan^2(x)=1000?

• Replies: 1
• Views: 1,014
Feb 5th 2013, 10:37 AM
9. ### Formula for describing a closed curve given 4 points

• Replies: 2
• Views: 557
Feb 4th 2013, 02:27 AM
10. ### Positions of points in intersecting circles (DIFFICULT)

• Replies: 1
• Views: 468
Feb 2nd 2013, 09:17 AM
11. ### Help calculating the volume of a tray that is trapezoidal in both cross sections

• Replies: 2
• Views: 655
Feb 1st 2013, 09:05 AM
12. ### Finding the arg equation of arc with given endpoints

• Replies: 2
• Views: 525
Jan 31st 2013, 06:51 PM
13. ### Help with radians, arcs and areas please?

• Replies: 3
• Views: 1,521
Jan 31st 2013, 02:31 PM
14. ### Distance formula

• Replies: 5
• Views: 585
Jan 30th 2013, 02:17 PM
15. ### arccos x + arccos y = ...

• Replies: 2
• Views: 1,563
Jan 30th 2013, 05:19 AM
16. ### Simple angle problem

• Replies: 3
• Views: 460
Jan 29th 2013, 11:18 PM
17. ### Finding the trig function

• Replies: 2
• Views: 989
Jan 29th 2013, 07:03 PM
18. ### quick question about reciprocal identity

• Replies: 1
• Views: 489
Jan 29th 2013, 02:29 PM
19. ### Word Problem

• Replies: 2
• Views: 1,620
Jan 28th 2013, 07:03 PM
20. ### Triangle with angle of 60 degrees

• Replies: 3
• Views: 639
Jan 28th 2013, 06:46 PM
21. ### Bearing and Trigonometry

• Replies: 1
• Views: 1,132
Jan 27th 2013, 09:27 PM

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