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stapel (Elite Member)
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# Forum: Geometry and Trig

1. ### Sticky: Read Before Posting!!

• Replies: 0
• Views: 23,086
Ted
02-21-2006, 12:22 AM
1. ### Pre-U Vector Question: Line has equation r = 9i − j + 8k + λ(3i − j + 2k)

• Replies: 2
• Views: 139
02-07-2018, 10:15 PM
2. ### How to find top and sides of trapezoid when all of them are equal?

• Replies: 1
• Views: 87
02-04-2018, 04:38 PM
3. ### Adding Frac Trig Fcns: Going from X2/Tan(55) + X2/Tan(75)=87120 to 5.16X2/5.329=87120

• Replies: 2
• Views: 193
01-30-2018, 10:12 PM
4. ### X & Y proportional scale

• Replies: 1
• Views: 80
01-30-2018, 03:21 PM
5. ### An 'undefined' answer with sine rule [non-right angled triangles]

• Replies: 3
• Views: 122
01-30-2018, 03:14 PM
6. ### Trig Difference Identity: when I do sin(-15) = sin(30-45), I get a positive result

• Replies: 2
• Views: 136
01-30-2018, 11:03 AM
7. ### Parallel line and Triangle with missing angle

• Replies: 4
• Views: 124
01-30-2018, 10:21 AM
8. ### Finding the interior angles of a triangle when given the sides lengths of 2,3,4

• Replies: 2
• Views: 218
01-28-2018, 10:55 AM
9. ### Ratios Of Lines Within Quadrilateral (Proof): Show AX:XC is same as AB:BC

• Replies: 11
• Views: 540
01-27-2018, 01:35 PM
10. ### Find coressponding values of tanx for each x in 0°≤x≤270°

• Replies: 0
• Views: 95
01-27-2018, 11:06 AM
11. ### Parallel Lines Of Equal Length Within Square: smallest possible value for angle SPA?

• Replies: 8
• Views: 373
01-27-2018, 07:42 AM
12. ### How do I do problem numbers: 6, 9 , 10, 11(please just answers I have no time) and pl

• Replies: 3
• Views: 236
01-26-2018, 02:46 AM

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