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# Trigonometry Forum

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

1. ### Cant solve If 𝑓(𝜃) = 2sin𝜃 − 𝑠𝑖𝑛 (𝜃/2) then find 𝑓(𝜋/3).

• Replies: 2
• Views: 611
Jan 4th 2019, 04:00 AM

• Replies: 2
• Views: 505
Dec 29th 2018, 07:40 PM
3. ### Trigonometric identity

• Replies: 1
• Views: 511
Dec 8th 2018, 10:59 AM

• Replies: 4
• Views: 657
Dec 7th 2018, 11:48 AM
5. ### Diameter of a circle

• Replies: 0
• Views: 343
Nov 30th 2018, 11:28 PM
6. ### Transformations of Trigonometric Functions

• Replies: 5
• Views: 499
Nov 17th 2018, 03:00 PM
7. ### Need help with simple trig proof

• Replies: 1
• Views: 655
Nov 12th 2018, 01:39 PM

• Replies: 2
• Views: 538
Oct 18th 2018, 01:31 AM
9. ### How do I get the length and width given the diagonal line and ratio?

• Replies: 1
• Views: 415
Oct 17th 2018, 01:39 PM
10. ### sin(x - pi/3) = 0

• Replies: 3
• Views: 606
Oct 7th 2018, 07:23 AM

• Replies: 2
• Views: 506
Oct 6th 2018, 07:45 PM
12. ### 3tanx + 2cosx = 0 Solving for x but confused

• Replies: 3
• Views: 1,076
Sep 25th 2018, 09:12 AM
13. ### Help needed (gr.12 trig)

• Replies: 1
• Views: 463
Sep 19th 2018, 02:24 AM

• Replies: 1
• Views: 658
Sep 18th 2018, 02:59 PM
15. ### Hi some trig help please

• Replies: 1
• Views: 419
Sep 18th 2018, 02:49 PM
16. ### convergent equation

• Replies: 1
• Views: 460
Sep 13th 2018, 10:41 AM
17. ### trig word problem (grade 12 applied math)

• Replies: 2
• Views: 616
Sep 13th 2018, 10:05 AM
18. ### Need help with trigonometry and exact values

• Replies: 2
• Views: 482
Aug 16th 2018, 06:58 AM
19. ### Trigonometry of effective wind from yaw angle (see link)

• Replies: 3
• Views: 842
Aug 14th 2018, 10:43 PM
20. ### Help me with this trigonometry!!

• Replies: 0
• Views: 584
Aug 8th 2018, 03:55 PM

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# how to provr a point is co planar

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