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Tag: trigonometry

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1. ### Unexplained properties beside Law of Sine and Cosine.

• Replies: 14
• Views: 544
Last Post: 01-14-2019 06:45 PM
by Jomo
2. ### Using Hyperbolic functions, Solve sinh(2x) = 8cosh(x). Give answer in ln.

• Replies: 6
• Views: 215
Last Post: 01-06-2019 08:22 AM
by Bobby Bones
3. ### Calculus of exponentials and trip fcns: temp can be modeled by 𝑦 = 5𝑐𝑜𝑠 𝑥^2 + 25

• Replies: 2
• Views: 162
Last Post: 12-06-2018 05:12 PM
by Dr.Peterson

Forum:
Calculus

4. ### Problem solving: Pythagoras' theorem: Annabel @ A wishes to visit friend Bertie @ B

• Replies: 3
• Views: 424
Last Post: 11-18-2018 05:46 PM
by mmm4444bot
5. ### Skyscraper: difference in width of base, top floor, using plumb lines & Earth's diam.

• Replies: 7
• Views: 679
Last Post: 10-30-2018 05:41 PM
by stapel
6. ### Calculate a side in a non-right angled trangle

• Replies: 5
• Views: 380
Last Post: 09-21-2018 08:48 PM
by sinx
7. ### Modeling the length of a plank as a function of an indicated angle

• Replies: 8
• Views: 470
Last Post: 08-17-2018 12:37 PM
by Subhotosh Khan
8. ### A Vector + Trig Problem

• Replies: 1
• Views: 207
Last Post: 07-26-2018 09:25 AM
by Dr.Peterson
9. ### Tangent and Right Triangle

• Replies: 4
• Views: 528
Last Post: 06-05-2018 10:17 AM
by orecchionebruno
10. ### Solve for x (multiplication of trigonometric function and logarithmic function)

• Replies: 6
• Views: 941
Last Post: 06-05-2018 02:50 AM
by brianz24
11. ### Triangle geometry: Let △ABC be a triangle. Let AD and CE be its internal bisectors, w

• Replies: 2
• Views: 738
Last Post: 06-06-2018 09:11 PM
by Lemoine
12. ### any ideas? sin[arccos(-sqrt[3]/2) + arctan(-sqrt[3]/3)] (easy angles)

• Replies: 2
• Views: 385
Last Post: 05-15-2018 09:57 AM
by Dr.Peterson
13. ### 14 Trigonometry Questions! Need Help Please!

• Replies: 1
• Views: 453
Last Post: 05-03-2018 08:11 PM
by Subhotosh Khan
14. ### Is trigonometry a concept that is practical to use in DAILY-life?

• Replies: 5
• Views: 578
Last Post: 05-03-2018 05:14 PM
by stapel
15. ### Pre-Calculus Trigonometry Eqns & Ident's: Find cos(A-B) given tanA=-1/4, A in QII...

• Replies: 2
• Views: 617
Last Post: 05-03-2018 01:22 PM
by Macmon
16. ### Parallel Lines Of Equal Length Within Square: smallest possible value for angle SPA?

• Replies: 8
• Views: 1,587
Last Post: 01-27-2018 07:42 AM
by Jonathan
17. ### Prove truth of circle division theory by 5 equal parts

• Replies: 2
• Views: 1,070
Last Post: 11-19-2017 03:15 PM
by JeffM
18. ### Which Trigonometric Identity in being used to simplify this integral?

• Replies: 1
• Views: 583
Last Post: 11-12-2017 09:32 AM
by Subhotosh Khan

Forum:
Calculus

19. ### Positive values for A, phi for which 5coswt = Acos(wt-H/6) + 5cos(wt+p) holds

• Replies: 0
• Views: 630
Last Post: 10-17-2017 02:31 PM
by chudy701
20. ### Extremely hard trigo prob: "Nathan is swimming across a river from A to B..."

• Replies: 3
• Views: 1,357
Last Post: 09-18-2017 04:38 PM
by stapel
21. ### Help! Coordinates of intersecting lines!

• Replies: 2
• Views: 1,172
Last Post: 09-17-2017 06:02 PM
by Mast4rwang
22. ### De moivre's theorem & binomial theorem: If x+1/x= 2cosa, prove that x^6-2x^3cos3a+1=0

• Replies: 8
• Views: 2,032
Last Post: 08-09-2017 08:59 PM
by stapel
23. ### Trigonometry problem

• Replies: 2
• Views: 885
Last Post: 06-12-2017 06:10 AM
by mheg
24. ### Help with finding a missing angle

• Replies: 2
• Views: 1,542
Last Post: 06-02-2017 05:22 PM
by frank.
25. ### Cannot solve 3D trigonometry question

• Replies: 4
• Views: 1,941
Last Post: 05-18-2017 04:18 PM
by mmm4444bot
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