# Trigonometry Forum

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

1. ### if tanx + tany = 25 and cotx + coty =30, what is tan(x+y)...please help with this que

• Replies: 2
• Views: 2,286
Jan 24th 2013, 10:17 PM
2. ### Find all x in degrees

• Replies: 1
• Views: 364
Jan 24th 2013, 05:32 PM
3. ### Plot the function Y = 20 tan (x – 20)

• Replies: 1
• Views: 561
Jan 24th 2013, 12:50 AM
4. ### trigonometric subtraction.

• Replies: 2
• Views: 418
Jan 23rd 2013, 06:44 PM

• Replies: 10
• Views: 1,385
Jan 23rd 2013, 03:11 PM
6. ### show by algebraic means the value of sin^4(15) - cos^4(15_

• Replies: 2
• Views: 2,409
Jan 23rd 2013, 01:06 PM
7. ### value of x when pi/2 < x < pi

• Replies: 6
• Views: 614
Jan 22nd 2013, 06:11 AM
8. ### Find the functions and their domains.

• Replies: 6
• Views: 517
Jan 21st 2013, 09:24 PM
9. ### Finding the Exact Value of an Inverse Trigonometry Function

• Replies: 1
• Views: 2,328
Jan 21st 2013, 09:08 PM
10. ### Trigonometric equation

• Replies: 1
• Views: 570
Jan 21st 2013, 06:34 PM

• Replies: 0
• Views: 756
Jan 21st 2013, 05:04 AM
12. ### exponent in trig functions

• Replies: 1
• Views: 358
Jan 20th 2013, 07:28 PM
13. ### Using Trigonometric Identities

• Replies: 4
• Views: 898
Jan 20th 2013, 04:36 PM
14. ### tan(A/2) + cot9A/2) = 2cosecA

• Replies: 3
• Views: 906
Jan 20th 2013, 12:45 PM
15. ### secx + tanx = 1/(secx-tanx)

• Replies: 2
• Views: 7,553
Jan 20th 2013, 02:57 AM
16. ### Find an equation

• Replies: 6
• Views: 828
Jan 18th 2013, 01:02 PM
17. ### Find the value

• Replies: 7
• Views: 591
Jan 18th 2013, 11:25 AM
18. ### Law of Tangents

• Replies: 6
• Views: 748
Jan 17th 2013, 07:40 AM
19. ### Photogrammetric coordinate geometry

• Replies: 0
• Views: 584
Jan 16th 2013, 02:18 PM
20. ### Pyramid

• Replies: 9
• Views: 452
Jan 16th 2013, 06:05 AM
21. ### Sinxtanx - tanx = 0 ; Solve for x?

• Replies: 3
• Views: 5,506
Jan 15th 2013, 10:59 PM
22. ### Reducing fractions with pi in them

• Replies: 3
• Views: 3,770
Jan 15th 2013, 04:32 PM

• Replies: 1
• Views: 1,406
Jan 15th 2013, 01:30 AM
24. ### Trigo - Showing

• Replies: 2
• Views: 632
Jan 13th 2013, 04:13 PM
25. ### The Fundamental Counting Principle

• Replies: 4
• Views: 857
Jan 11th 2013, 12:37 PM

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