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Forum: Trigonometry

Trigonometric Functions, Trigonometric Identities, etc.

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  2. [SOLVED] Dc 8t14 product to sum indentity

    Started by karush, November 12th, 2015 16:59
    $fracsinleft3thetaright, $tan4pi$, expression, simplify, sum
    • Replies: 5
    • Views: 555
    November 12th, 2015, 20:06 Go to last post
  3. [SOLVED] Trig identity

    Started by karush, November 9th, 2015 18:48
    $$=fracx+y1-xy$$, $tanx+y$, formula, identity, sum
    • Replies: 2
    • Views: 449
    November 9th, 2015, 19:06 Go to last post
  4. [SOLVED] Exact value of Cos(-pi/3)

    Started by riri, November 9th, 2015 04:07
    circle, cos-pi/3, exact, exact value, inverse
    • Replies: 2
    • Views: 970
    November 9th, 2015, 10:10 Go to last post
  5. [SOLVED] How do we get the arccosh ?

    Started by mathmari, October 29th, 2015 16:21
    $x=arccosh, $x=arcsinh, book, frac1y$, simplify
    • Replies: 6
    • Views: 603
    October 30th, 2015, 17:18 Go to last post
  6. Trig help please!

    Started by megani, October 15th, 2015 20:44
    2 Pages
    1 2
    • Replies: 10
    • Views: 1,298
    October 18th, 2015, 20:19 Go to last post
  7. [SOLVED] Trigonometric Identities Problem

    Started by courtbits, October 8th, 2015 10:40
    cot, find, identities, pi/4, tanpi/4
    • Replies: 4
    • Views: 695
    October 12th, 2015, 20:10 Go to last post
  8. Trig Identities Problem

    Started by courtbits, October 12th, 2015 10:59
    cospi/3=, find, frac12, secpi-pi/3, trig
    • Replies: 2
    • Views: 353
    October 12th, 2015, 13:06 Go to last post
  9. Applications to Law of Sines

    Started by ramz, October 7th, 2015 04:20
    • Replies: 6
    • Views: 683
    October 8th, 2015, 00:20 Go to last post
  10. Angle between the tangents to the circle

    Started by ramz, October 7th, 2015 23:29
    • Replies: 4
    • Views: 457
    October 8th, 2015, 00:01 Go to last post
  11. Centripetal force calculation

    Started by JarrettHayama, October 5th, 2015 03:49
    centrifuge, centripetal, force, gravity, round
    • Replies: 1
    • Views: 367
    October 5th, 2015, 06:22 Go to last post
  12. [SOLVED] trig poser

    Started by oldfart, September 24th, 2015 06:45
    angle, answer, degrees, oldfart, supposedly
    • Replies: 4
    • Views: 573
    September 25th, 2015, 06:01 Go to last post
  13. Trig proof: sum of squared cosecants

    Started by greg1313, September 19th, 2015 22:35
    demoivres, identities, solve, trigonometric, unable
    • Replies: 3
    • Views: 717
    September 21st, 2015, 23:54 Go to last post
  14. [SOLVED] NEW Beginner's Trigonometry Identities Problem

    Started by courtbits, September 9th, 2015 11:37
    appreciated, find, gladly, sintheta, theta
    • Replies: 3
    • Views: 742
    September 9th, 2015, 13:30 Go to last post
  15. [SOLVED] Simple Trigonometric Identities

    Started by courtbits, September 2nd, 2015 12:11
    identities, quadrant, secΘ, sin, trigonometric
    • Replies: 9
    • Views: 917
    September 2nd, 2015, 13:24 Go to last post
  16. Not a Math Guru

    Started by bikerguy, August 29th, 2015 07:08
    • Replies: 4
    • Views: 697
    August 31st, 2015, 03:14 Go to last post
  17. [SOLVED] Complex equation find x

    Started by karush, August 19th, 2015 00:11
    $$x^2+2i=0$$, easy, equation, factor, find
    • Replies: 3
    • Views: 1,111
    August 19th, 2015, 01:24 Go to last post
  18. How to find a general solution to sec2 2x = 1 tan 2x

    Started by arejet, August 16th, 2015 14:41
    arijit, cos2, equation, find, sin
    • Replies: 2
    • Views: 3,011
    August 16th, 2015, 15:45 Go to last post
  19. [SOLVED] Convert to sin x equation

    Started by karush, August 15th, 2015 17:49
    convert, coversion, equation, find, sin
    • Replies: 8
    • Views: 771
    August 16th, 2015, 08:58 Go to last post
  20. [SOLVED] trig word problem

    Started by karush, August 13th, 2015 14:55
    • Replies: 1
    • Views: 521
    August 13th, 2015, 16:09 Go to last post
  21. Triangle Questions

    Started by wailingkoh, August 8th, 2015 10:19
    • Replies: 9
    • Views: 1,171
    August 9th, 2015, 12:39 Go to last post
  22. [SOLVED] Polar to rectangular

    Started by karush, August 9th, 2015 00:20
    $y=$, answer, hard, polar, rectangular
    • Replies: 3
    • Views: 549
    August 9th, 2015, 03:00 Go to last post
  23. Quadratic trig identity

    Started by karush, July 31st, 2015 21:34
    $$cosleft4xright, =8sin^4leftxright, break, nice, quadratic
    • Replies: 4
    • Views: 568
    July 31st, 2015, 22:39 Go to last post
  24. [SOLVED] trig identity

    Started by karush, July 30th, 2015 14:05
    =2cotleft2xright$$, identity, lhs, reduce, trig
    • Replies: 5
    • Views: 705
    July 31st, 2015, 14:51 Go to last post
  25. Find zeros f(x)=(x/100)-sin(x)

    Started by karush, July 6th, 2015 20:23
    $fx=x/100-sinx$, find, melt, solve, zeros
    • Replies: 3
    • Views: 807
    July 7th, 2015, 03:01 Go to last post
  26. [SOLVED] Arcoth(x)

    Started by ognik, June 30th, 2015 22:54
    cothy, extract, frace^2y+1e^2y-1, fracx+1x-1, y=frac12
    • Replies: 2
    • Views: 527
    July 1st, 2015, 05:23 Go to last post
  27. Proving and Identity

    Started by Sean, June 21st, 2015 18:07
    • Replies: 3
    • Views: 981
    June 22nd, 2015, 08:34 Go to last post
  28. How to find the answer sin 120.

    Started by tmt, June 17th, 2015 15:58
    • Replies: 1
    • Views: 602
    June 17th, 2015, 16:18 Go to last post
  29. Trigonometric Equation

    Started by manish00333, June 4th, 2015 22:27
    11pi/8, 3pi/8, 9pi/8, don, pi/8
    • Replies: 3
    • Views: 572
    June 4th, 2015, 22:38 Go to last post
  30. solving for theta

    Started by Drain Brain, May 24th, 2015 01:08
    piece, problem, solve, solving, theta
    • Replies: 2
    • Views: 581
    May 25th, 2015, 06:52 Go to last post
  31. Solving trig equation

    Started by Drain Brain, May 23rd, 2015 05:54
    $wcos30deg$, eqns, solve, system, trig
    • Replies: 5
    • Views: 576
    May 23rd, 2015, 07:18 Go to last post

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