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Forum: Trigonometry

Trigonometric Functions, Trigonometric Identities, etc.

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  2. "Bearing" question - finding distance between two objects

    Started by tantrik, January 16th, 2017 09:13
    bearing, lighthouse, motorboat, question, south
    • Replies: 2
    • Views: 467
    April 3rd, 2017, 07:46 Go to last post
  3. Cos trig identity

    Started by paulmdrdo, March 7th, 2017 06:23
    circuits, cos, derivation, formula, identity
    • Replies: 1
    • Views: 117
    March 7th, 2017, 09:05 Go to last post
  4. Trig Identity problem

    Started by JPorkins, March 1st, 2017 16:15
    cos2x, grateful, identity, sinx, trig
    • Replies: 9
    • Views: 267
    March 2nd, 2017, 07:58 Go to last post
  5. Rotation Formula

    Started by jerryd, February 25th, 2017 18:43
    angle, cos, radius, rotation, sin
    • Replies: 2
    • Views: 152
    February 25th, 2017, 21:33 Go to last post
  6. [SOLVED] Trigonometric simplification

    Started by Theia, January 21st, 2017 17:57
    alpha, atan^2, cdot, cos, rtan
    • Replies: 2
    • Views: 244
    January 22nd, 2017, 07:29 Go to last post
  7. Prove that sin(x)+cos(x) is equal or larger than 1

    Started by Yankel, January 10th, 2017 05:22
    2 Pages
    1 2
    assume, contradiction, inequality, prove, [sin^2x-2sinxcosx+cos^2x
    • Replies: 11
    • Views: 676
    January 15th, 2017, 13:44 Go to last post
  8. Finding distances to the frisbee

    Started by kingsala, April 10th, 2014 17:01
    • Replies: 3
    • Views: 1,070
    December 29th, 2016, 11:17 Go to last post
  9. Graphing trig function

    Started by Dasysaaaa, December 17th, 2016 17:25
    function, graphing, parent, periods, points
    • Replies: 1
    • Views: 179
    December 18th, 2016, 04:11 Go to last post
  10. Simplifying A trig equation

    Started by tmt, November 20th, 2016 17:28
    $cscleftthetaright$, $fracsecthetatantheta$, equation, simplify, trig
    • Replies: 1
    • Views: 185
    November 20th, 2016, 17:33 Go to last post
  11. Trigonometric identities

    Started by simongreen93, November 2nd, 2016 16:25
    360, 4cosēθ, degrees, solve, trigonometric identities
    • Replies: 6
    • Views: 487
    November 16th, 2016, 14:10 Go to last post
  12. trigonometric equation

    Started by laura123, November 15th, 2016 17:17
    equation, everthing, idea, works, x=0$
    • Replies: 6
    • Views: 402
    November 16th, 2016, 04:21 Go to last post
  13. Trignometric identities

    Started by simongreen93, November 14th, 2016 17:41
    4cotē, cosec, identities, solve, trignometric
    • Replies: 2
    • Views: 202
    November 14th, 2016, 21:39 Go to last post
  14. Equation involving the inverse tangent function

    Started by karseme, November 12th, 2016 15:43
    equation, implies, number, real, y=arccotx
    • Replies: 2
    • Views: 210
    November 12th, 2016, 16:54 Go to last post
  15. [SOLVED] tangent transformations

    Started by karush, November 3rd, 2016 19:01
    beginalign, displaystyle, endalign, on$, ps&=phi
    • Replies: 2
    • Views: 221
    November 4th, 2016, 00:36 Go to last post
  16. Trigonometric inequality with pi

    Started by karseme, October 23rd, 2016 06:34
    inequality, sinpi, sinpixcospisqrx, trigonometric, xcospisqrtx
    • Replies: 4
    • Views: 235
    October 24th, 2016, 14:38 Go to last post
  17. Trigonometric inequation with tangent function

    Started by karseme, October 24th, 2016 02:52
    attempt, inequation, solution, task, trigonometric
    • Replies: 0
    • Views: 167
    October 24th, 2016, 02:52 Go to last post
  18. don't think there is a solution

    Started by dayalji, October 2nd, 2016 07:48
    cosecx/1-cosecx, cosecx/1-cosecx=50, sec^2x=25, show, solution
    • Replies: 4
    • Views: 366
    October 2nd, 2016, 15:34 Go to last post
  19. Show how to solve this trig question?

    Started by Ilikebugs, September 24th, 2016 18:19
    abc, drawn, median, meeting, triangle
    • Replies: 1
    • Views: 301
    September 24th, 2016, 21:33 Go to last post
  20. Trigonometric identity

    Started by 816318, September 18th, 2016 13:09
    cos2, cos2theta, figure, sin2theta, sin2theta-sin2theta
    • Replies: 2
    • Views: 263
    September 21st, 2016, 21:11 Go to last post
  21. home work help: proving a trigonometric identity

    Started by 816318, September 15th, 2016 17:22
    1+costheta, home, work
    • Replies: 4
    • Views: 284
    September 17th, 2016, 18:13 Go to last post
  22. Which of the following are equal to this identity?

    Started by Umar, September 10th, 2016 11:12
    • Replies: 4
    • Views: 486
    September 10th, 2016, 11:34 Go to last post
  23. Coordinates of sin(2x)=1/2

    Started by markosheehan, September 6th, 2016 15:47
    • Replies: 5
    • Views: 409
    September 7th, 2016, 14:51 Go to last post
  24. finding solutions

    Started by fordy2707, August 20th, 2016 11:23
    • Replies: 4
    • Views: 463
    September 4th, 2016, 18:46 Go to last post
    • Replies: 2
    • Views: 280
    August 24th, 2016, 22:22 Go to last post
  25. Solve the trigonometric equation sin(2theta-pi/6) = cos(2theta)

    Started by iixfaith, August 16th, 2016 14:11
    2 Pages
    1 2
    • Replies: 10
    • Views: 1,247
    August 17th, 2016, 15:57 Go to last post
  26. [SOLVED] Find cos theta and tan theta using sin theta

    Started by mathlearn, August 13th, 2016 06:22
    cos, find, solve, tan, theta
    • Replies: 4
    • Views: 580
    August 14th, 2016, 08:16 Go to last post
  27. Trigonometric equation

    Started by NotaMathPerson, July 31st, 2016 19:42
    4+4sinx/3, correct, cosx, end, plug
    • Replies: 4
    • Views: 488
    August 2nd, 2016, 01:32 Go to last post

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