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# Forum: Geometry and Trig

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

• Replies: 0
• Views: 26,499
Ted
02-21-2006, 12:22 AM
1. ### Help asap

• Replies: 1
• Views: 163
01-07-2019, 01:58 PM
2. ### Differentiate sin(2x+y)

• Replies: 2
• Views: 183
01-07-2019, 09:26 AM
3. ### Using Hyperbolic functions, Solve sinh(2x) = 8cosh(x). Give answer in ln.

• Replies: 6
• Views: 224
01-06-2019, 08:22 AM
4. ### How to prove sin 45 = 1/root 2 and root 2/2 same?

• Replies: 14
• Views: 790
01-05-2019, 03:26 PM
5. ### Challenge Geometry Prob: Suppose segment XY is divided into millions of congruent...

• Replies: 7
• Views: 737
12-31-2018, 12:28 PM
6. ### need help: Greg and Kristine are on opposite ends of a zip line that crosses a gorge.

• Replies: 13
• Views: 878
12-30-2018, 06:51 PM
7. ### Reading Comphernsive - Plato's cricle

• Replies: 8
• Views: 421
12-29-2018, 09:52 AM
8. ### How do we get (root) 1000 = 10 (root) 10?

• Replies: 2
• Views: 253
12-29-2018, 07:55 AM
9. ### Building double angles in isosceles triangle by compasses and striaghtedge

• Replies: 6
• Views: 383
12-28-2018, 06:54 PM
10. ### Sinus domain: y = sin(alpha) What is the domain of y is between -1 to 1?

• Replies: 19
• Views: 878
12-27-2018, 05:35 PM
11. ### Geometric Q w/ Lack of Data: "AB is hypotenuse of ABC, also biggest side of some..."

• Replies: 6
• Views: 553
12-26-2018, 01:07 PM
12. ### If vertices of 🔺ABC are A(-5,0), B(5,0) and C(0,8), what is area?

• Replies: 5
• Views: 741
12-20-2018, 11:10 PM
13. ### Prove polygon w/ n sides has n vertices; w/ n vertices has n sides

• Replies: 6
• Views: 522
12-20-2018, 01:06 PM

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