Geometry and Trigonometry

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

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  1. Xarzu

    A Simple Trigonometry question about Cosines

    Xarzu, Sep 26, 2017
    Replies:
    0
    Views:
    991
    Xarzu
    Sep 26, 2017
  2. redapplesonly

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

    redapplesonly, Jan 12, 2018
    Replies:
    0
    Views:
    1,146
    redapplesonly
    Jan 12, 2018
  3. cpwang

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

    cpwang, Jan 2, 2019
    Replies:
    0
    Views:
    1,280
    cpwang
    Jan 2, 2019
  4. melman

    Math help

    melman, Apr 20, 2020
    Replies:
    1
    Views:
    962
    hendry1
    Apr 21, 2020
  5. hshi2021

    Calculation Help

    hshi2021, May 26, 2021
    Replies:
    0
    Views:
    352
    hshi2021
    May 26, 2021
  6. OlafK

    Calculation of the center of several geographical points.

    OlafK, Jun 21, 2021
    Replies:
    0
    Views:
    244
    OlafK
    Jun 21, 2021
  7. DropDeadFred

    The Sine Law question

    DropDeadFred, Nov 4, 2017
    Replies:
    6
    Views:
    1,029
    nycmathguy
    Jul 8, 2021
  8. nycmathguy

    Relationship Between Geometry & Trigonometry

    nycmathguy, Jul 13, 2021
    Replies:
    2
    Views:
    244
    nycmathguy
    Jul 14, 2021
  9. alfie

    Is it possible to calculate area on a topographical map without a scale?

    alfie, Jul 18, 2021
    Replies:
    2
    Views:
    278
    alfie
    Jul 19, 2021
  10. nycmathguy

    Euclidean Geometry vs Non-euclidean Geometry

    nycmathguy, Jul 31, 2021
    Replies:
    2
    Views:
    297
    nycmathguy
    Jul 31, 2021
  11. nycmathguy

    Measurement of A Line

    nycmathguy, Jul 31, 2021
    Replies:
    2
    Views:
    176
    nycmathguy
    Jul 31, 2021
  12. nycmathguy

    Rational Trigonometry vs Regular Trigonometry

    nycmathguy, Jul 31, 2021
    Replies:
    2
    Views:
    271
    nycmathguy
    Jul 31, 2021
  13. nycmathguy

    Size of A Dot

    nycmathguy, Jul 31, 2021
    Replies:
    4
    Views:
    453
    nycmathguy
    Aug 1, 2021
  14. nycmathguy

    Law of Tangent

    nycmathguy, Jul 31, 2021
    Replies:
    4
    Views:
    327
    nycmathguy
    Aug 1, 2021
  15. 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:
    305
    nycmathguy
    Aug 28, 2021
  16. Doctor T

    Are the 2 Images Compatible?

    Doctor T, Sep 12, 2021
    Replies:
    0
    Views:
    180
    Doctor T
    Sep 12, 2021
  17. nycmathguy

    Find Area of Blue Shaded Region

    nycmathguy, Sep 15, 2021
    Replies:
    0
    Views:
    347
    nycmathguy
    Sep 15, 2021
  18. nycmathguy

    Find Angle Beta

    nycmathguy, Sep 15, 2021
    Replies:
    2
    Views:
    261
    nycmathguy
    Sep 16, 2021
  19. nycmathguy

    Find Area of Shaded Circle

    nycmathguy, Sep 15, 2021
    Replies:
    2
    Views:
    306
    nycmathguy
    Sep 16, 2021
  20. nycmathguy

    Find Angle x

    nycmathguy, Sep 15, 2021
    Replies:
    2
    Views:
    231
    nycmathguy
    Sep 16, 2021
  21. nycmathguy

    Find Area of Shaded Region

    nycmathguy, Sep 15, 2021
    Replies:
    2
    Views:
    224
    nycmathguy
    Sep 16, 2021
  22. nycmathguy

    Perimeter of Original Rectangle

    nycmathguy, Sep 15, 2021
    Replies:
    2
    Views:
    304
    nycmathguy
    Sep 16, 2021
  23. nycmathguy

    Find x

    nycmathguy, Sep 19, 2021
    Replies:
    2
    Views:
    221
    nycmathguy
    Sep 19, 2021
  24. nycmathguy

    Find x & AC

    nycmathguy, Sep 19, 2021
    Replies:
    2
    Views:
    192
    nycmathguy
    Sep 19, 2021
  25. nycmathguy

    Find AB

    nycmathguy, Sep 19, 2021
    Replies:
    2
    Views:
    245
    nycmathguy
    Sep 19, 2021
  26. nycmathguy

    Area of Rectangle As Function of x

    nycmathguy, Sep 30, 2021
    Replies:
    2
    Views:
    304
    nycmathguy
    Oct 1, 2021
  27. nycmathguy

    Perpendicular Segments

    nycmathguy, Sep 30, 2021
    Replies:
    2
    Views:
    204
    nycmathguy
    Oct 1, 2021
  28. nycmathguy

    Diagonals of Parallelogram

    nycmathguy, Sep 30, 2021
    Replies:
    4
    Views:
    234
    nycmathguy
    Oct 1, 2021
  29. nycmathguy

    Another Name for Angle x

    nycmathguy, Oct 23, 2021
    Replies:
    2
    Views:
    204
    nycmathguy
    Oct 23, 2021
  30. nycmathguy

    Find x & Complementary Angles

    nycmathguy, Oct 23, 2021
    Replies:
    2
    Views:
    367
    nycmathguy
    Oct 23, 2021
  31. nycmathguy

    Find x & Supplementary Angles

    nycmathguy, Oct 23, 2021
    Replies:
    2
    Views:
    208
    nycmathguy
    Oct 23, 2021
  32. nycmathguy

    Trigonometric Terms

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    207
    nycmathguy
    Oct 24, 2021
  33. nycmathguy

    Determining Quadrants

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    379
    nycmathguy
    Oct 24, 2021
  34. nycmathguy

    Complementary & Supplementary Angles

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    415
    nycmathguy
    Oct 24, 2021
  35. nycmathguy

    Finding Coterminal Angles

    nycmathguy, Oct 24, 2021
    Replies:
    3
    Views:
    204
    MathLover1
    Oct 24, 2021
  36. nycmathguy

    Sketching Angles

    nycmathguy, Oct 24, 2021
    Replies:
    4
    Views:
    289
    nycmathguy
    Oct 24, 2021
  37. nycmathguy

    Trigonometry Definition

    nycmathguy, Oct 24, 2021
    Replies:
    6
    Views:
    172
    nycmathguy
    Oct 24, 2021
  38. nycmathguy

    Convert D°M'S" to Degrees

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    283
    nycmathguy
    Oct 24, 2021
  39. nycmathguy

    Convert From Degrees to D° M' S"

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    266
    nycmathguy
    Oct 24, 2021
  40. nycmathguy

    Sketching Angles...2

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    167
    nycmathguy
    Oct 25, 2021
  41. nycmathguy

    Determining Quadrants...2

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    190
    nycmathguy
    Oct 25, 2021
  42. nycmathguy

    Complementary & Supplementary Angles...2

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    528
    nycmathguy
    Oct 25, 2021
  43. nycmathguy

    Finding Coterminal Angles...2

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    219
    nycmathguy
    Oct 25, 2021
  44. MathNoob

    Calculate the length of a side of a triangle knowing

    MathNoob, Oct 26, 2021
    Replies:
    6
    Views:
    283
    nycmathguy
    Oct 27, 2021
  45. nycmathguy

    Radian & Degree Measures

    nycmathguy, Oct 27, 2021
    Replies:
    4
    Views:
    183
    nycmathguy
    Oct 27, 2021
  46. nycmathguy

    Relabeling Angles

    nycmathguy, Oct 27, 2021
    Replies:
    2
    Views:
    190
    nycmathguy
    Oct 28, 2021
  47. nycmathguy

    Find Arc Length s

    nycmathguy, Oct 27, 2021
    Replies:
    2
    Views:
    205
    nycmathguy
    Oct 28, 2021
  48. nycmathguy

    Area & Perimeter of Sector

    nycmathguy, Oct 27, 2021
    Replies:
    2
    Views:
    299
    nycmathguy
    Oct 28, 2021
  49. nycmathguy

    Angular & Linear Speed

    nycmathguy, Oct 27, 2021
    Replies:
    5
    Views:
    398
    MathLover1
    Oct 28, 2021
  50. nycmathguy

    Finding Coterminal Angles...3

    nycmathguy, Oct 24, 2021
    Replies:
    2
    Views:
    380
    nycmathguy
    Oct 28, 2021
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