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# Trigonometry Forum

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

1. ### cosine rule

• Replies: 5
• Views: 552
Jul 29th 2017, 11:41 AM
2. ### Trig angle of elevation problem

• Replies: 1
• Views: 620
Jul 16th 2017, 02:14 PM
3. ### Solve 7 sin 2x - cos 2x = 0

• Replies: 4
• Views: 1,384
Jul 13th 2017, 10:08 AM
4. ### math problem

• Replies: 3
• Views: 575
Jul 13th 2017, 09:38 AM
5. ### Guidance in trignometry

• Replies: 2
• Views: 672
Jul 8th 2017, 09:20 PM
6. ### Trigonometric Identity

• Replies: 2
• Views: 564
Jul 2nd 2017, 03:58 AM
7. ### Finding a sine or cos function for a word problem question

• Replies: 1
• Views: 559
Jun 12th 2017, 06:19 PM
8. ### Sketching Sine Graphs

• Replies: 1
• Views: 493
Jun 3rd 2017, 02:21 AM
9. ### Finding The Vertical Translation

• Replies: 2
• Views: 495
Jun 2nd 2017, 10:26 PM
10. ### sin cos equation

• Replies: 4
• Views: 618
May 31st 2017, 01:37 PM
11. ### sin 60

• Replies: 1
• Views: 496
May 31st 2017, 10:58 AM

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13. ### triangle

• Replies: 7
• Views: 648
May 25th 2017, 02:32 AM
14. ### Pls help with tough trigo identity!

• Replies: 2
• Views: 469
May 24th 2017, 09:13 PM
15. ### Please discuss: Relating angular velocity to a sinusoidal function

• Replies: 1
• Views: 454
May 24th 2017, 10:01 AM
16. ### Determining a sinusoidal function from its graph, can amplitude be negative?

• Replies: 5
• Views: 1,101
May 24th 2017, 09:14 AM

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18. ### Linear, and angular velocity

• Replies: 2
• Views: 685
May 19th 2017, 07:50 AM
19. ### Solving For 'X' Using Trigonometry

• Replies: 6
• Views: 627
May 6th 2017, 08:02 PM

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# how to provr a point is co planar

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