Geometry and Trigonometry

Volumes, perimeters, angles, identities, triangles, sin, cos, tan.

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  1. eski

    Proofs of a better way to do trigonometry

    eski, Jul 31, 2023
    Replies:
    0
    Views:
    497
    eski
    Jul 31, 2023
  2. sam110

    Find the position of point c

    sam110, May 7, 2023
    Replies:
    0
    Views:
    428
    sam110
    May 7, 2023
  3. GregJ7

    Calculating angles for wood joinery

    GregJ7, Nov 5, 2022
    Replies:
    0
    Views:
    493
    GregJ7
    Nov 5, 2022
  4. nycmathguy

    Amplitude, Phase Shift and Period...2

    nycmathguy, Jul 17, 2022
    Replies:
    0
    Views:
    256
    nycmathguy
    Jul 17, 2022
  5. nycmathguy

    State the Period...2

    nycmathguy, Jul 17, 2022
    Replies:
    0
    Views:
    227
    nycmathguy
    Jul 17, 2022
  6. Millamber

    Creating Rectangles

    Millamber, Jun 26, 2022
    Replies:
    0
    Views:
    242
    Millamber
    Jun 26, 2022
  7. Samuel Gomes

    Euclidean Geometry - Demonstration Exercise

    Samuel Gomes, May 15, 2022
    Replies:
    0
    Views:
    361
    Samuel Gomes
    May 15, 2022
  8. ChainSalad

    Building an oblique-roped crane with spiral

    ChainSalad, Apr 3, 2022
    Replies:
    0
    Views:
    236
    ChainSalad
    Apr 3, 2022
  9. nycmathguy

    Graph Polar Equation...6

    nycmathguy, Mar 20, 2022
    Replies:
    0
    Views:
    185
    nycmathguy
    Mar 20, 2022
  10. nycmathguy

    Simple Harmonic Motion...2

    nycmathguy, Mar 2, 2022
    Replies:
    0
    Views:
    242
    nycmathguy
    Mar 2, 2022
  11. nycmathguy

    Power of a Complex Number...1

    nycmathguy, Feb 26, 2022
    Replies:
    0
    Views:
    240
    nycmathguy
    Feb 26, 2022
  12. DDB1967

    Finding an Unknown Point

    DDB1967, Dec 13, 2021
    Replies:
    0
    Views:
    183
    DDB1967
    Dec 13, 2021
  13. nycmathguy

    All Students Take Calculus

    nycmathguy, Dec 10, 2021
    Replies:
    0
    Views:
    239
    nycmathguy
    Dec 10, 2021
  14. nycmathguy

    Advanced Geometry Course

    nycmathguy, Oct 29, 2021
    Replies:
    0
    Views:
    165
    nycmathguy
    Oct 29, 2021
  15. nycmathguy

    Find Area of Blue Shaded Region

    nycmathguy, Sep 15, 2021
    Replies:
    0
    Views:
    349
    nycmathguy
    Sep 15, 2021
  16. Doctor T

    Are the 2 Images Compatible?

    Doctor T, Sep 12, 2021
    Replies:
    0
    Views:
    184
    Doctor T
    Sep 12, 2021
  17. OlafK

    Calculation of the center of several geographical points.

    OlafK, Jun 21, 2021
    Replies:
    0
    Views:
    245
    OlafK
    Jun 21, 2021
  18. hshi2021

    Calculation Help

    hshi2021, May 26, 2021
    Replies:
    0
    Views:
    355
    hshi2021
    May 26, 2021
  19. cpwang

    How To Define A Flat Plane: The fruit of reinventing wheels when studying Euclidean geometry

    cpwang, Jan 2, 2019
    Replies:
    0
    Views:
    1,282
    cpwang
    Jan 2, 2019
  20. redapplesonly

    Using arctan to find an angle... in an unusual coordinate system...

    redapplesonly, Jan 12, 2018
    Replies:
    0
    Views:
    1,148
    redapplesonly
    Jan 12, 2018
  21. Xarzu

    A Simple Trigonometry question about Cosines

    Xarzu, Sep 26, 2017
    Replies:
    0
    Views:
    993
    Xarzu
    Sep 26, 2017
  22. Vast3

    A Formula For Prime Pythagoreans

    Vast3, Dec 7, 2023
    Replies:
    1
    Views:
    349
    mathtotal
    Dec 9, 2023
  23. Perlita_k

    Similar triangles?? Proportions

    Perlita_k, Oct 11, 2023
    Replies:
    1
    Views:
    403
    e.jane.aran
    Oct 11, 2023
  24. nycmathguy

    Graph Polar Equation...1

    nycmathguy, Mar 20, 2022
    Replies:
    1
    Views:
    195
    nycmathguy
    Mar 20, 2022
  25. nycmathguy

    Rope Tension

    nycmathguy, Jan 29, 2022
    Replies:
    1
    Views:
    243
    MathLover1
    Jan 29, 2022
  26. emmett518

    Can I get my refrigerator into my cellar?

    emmett518, Oct 30, 2021
    Replies:
    1
    Views:
    186
    MathLover1
    Oct 30, 2021
  27. nico7s

    Please Explain: Find the inaccuracy in simple vector equation to find out if laser hits an object.

    nico7s, Aug 24, 2021
    Replies:
    1
    Views:
    309
    nycmathguy
    Aug 28, 2021
  28. melman

    Math help

    melman, Apr 20, 2020
    Replies:
    1
    Views:
    964
    hendry1
    Apr 21, 2020
  29. nycmathguy

    Equation for Sine Function

    nycmathguy, Jul 17, 2022
    Replies:
    2
    Views:
    288
    nycmathguy
    Jul 27, 2022
  30. nycmathguy

    State the Period...1

    nycmathguy, Jul 17, 2022
    Replies:
    2
    Views:
    279
    nycmathguy
    Jul 26, 2022
  31. nycmathguy

    Amplitude, Phase Shift & Period...1

    nycmathguy, Jul 17, 2022
    Replies:
    2
    Views:
    240
    nycmathguy
    Jul 26, 2022
  32. nycmathguy

    State Period & Phase Shift

    nycmathguy, Jul 2, 2022
    Replies:
    2
    Views:
    291
    nycmathguy
    Jul 2, 2022
  33. nycmathguy

    Geometric Proofs...2

    nycmathguy, Jun 28, 2022
    Replies:
    2
    Views:
    291
    nycmathguy
    Jun 29, 2022
  34. nycmathguy

    Geometric Proofs...1

    nycmathguy, Jun 28, 2022
    Replies:
    2
    Views:
    274
    nycmathguy
    Jun 29, 2022
  35. nycmathguy

    Geometric Proofs...3

    nycmathguy, Jun 28, 2022
    Replies:
    2
    Views:
    264
    nycmathguy
    Jun 29, 2022
  36. nycmathguy

    How Far Apart Are the Two Boats?

    nycmathguy, Jun 28, 2022
    Replies:
    2
    Views:
    294
    nycmathguy
    Jun 29, 2022
  37. nycmathguy

    Triangle ABC...4

    nycmathguy, Jun 25, 2022
    Replies:
    2
    Views:
    275
    nycmathguy
    Jun 26, 2022
  38. nycmathguy

    Triangle ABC...2

    nycmathguy, Jun 25, 2022
    Replies:
    2
    Views:
    258
    nycmathguy
    Jun 26, 2022
  39. nycmathguy

    Triangle ABC...1

    nycmathguy, Jun 25, 2022
    Replies:
    2
    Views:
    274
    nycmathguy
    Jun 26, 2022
  40. nycmathguy

    Solve Trigonometric Equation...3

    nycmathguy, Jun 24, 2022
    Replies:
    2
    Views:
    242
    nycmathguy
    Jun 25, 2022
  41. nycmathguy

    Solve Trigonometric Equation...2

    nycmathguy, Jun 24, 2022
    Replies:
    2
    Views:
    224
    nycmathguy
    Jun 25, 2022
  42. nycmathguy

    Solve Trigonometric Equation...1

    nycmathguy, Jun 24, 2022
    Replies:
    2
    Views:
    269
    nycmathguy
    Jun 25, 2022
  43. nycmathguy

    Find Length of Shadow

    nycmathguy, Jun 19, 2022
    Replies:
    2
    Views:
    285
    nycmathguy
    Jun 19, 2022
  44. nycmathguy

    Verify Trigonometric Identity...2

    nycmathguy, Jun 19, 2022
    Replies:
    2
    Views:
    298
    nycmathguy
    Jun 19, 2022
  45. nycmathguy

    Verify Trigonometric Identity...1

    nycmathguy, Jun 19, 2022
    Replies:
    2
    Views:
    256
    nycmathguy
    Jun 19, 2022
  46. nycmathguy

    Find Angle of Depression

    nycmathguy, Jun 19, 2022
    Replies:
    2
    Views:
    407
    nycmathguy
    Jun 19, 2022
  47. nycmathguy

    Find x...2

    nycmathguy, Jun 18, 2022
    Replies:
    2
    Views:
    307
    nycmathguy
    Jun 18, 2022
  48. nycmathguy

    Find x

    nycmathguy, Jun 18, 2022
    Replies:
    2
    Views:
    273
    nycmathguy
    Jun 18, 2022
  49. nycmathguy

    Find x & Complementary Angles

    nycmathguy, Jun 18, 2022
    Replies:
    2
    Views:
    330
    nycmathguy
    Jun 18, 2022
  50. nycmathguy

    Find Height of Buildings

    nycmathguy, Jun 12, 2022
    Replies:
    2
    Views:
    376
    nycmathguy
    Jun 17, 2022
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