Results 1 to 3 of 3

Math Help - Simplify This Trigonometric Expression

  1. #1
    Newbie
    Joined
    Oct 2007
    Posts
    11

    Simplify This Trigonometric Expression

    Hi, I am getting stuck on this one problem, I have my trigonometric identities down, but I can't figure out how to solve this problem:

    (Cos(x)Sec(x))/Cot(x)

    The question asks:

    "Simplify the trigonometric expression. Once you have simplified the expression completely, change all trigonometric functions in the simplified expression to sines and cosines. Finally, let s = sin(x) and c = cos(x) and enter your answer below. For example, if the expression simplifies to tan(x), you would enter s/c in the answer blank. (Note that your answer should use lower-case letters.)"

    I'd really appreciate it if anyone could help, thank you very much in advance.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by DesiKid89 View Post
    Hi, I am getting stuck on this one problem, I have my trigonometric identities down, but I can't figure out how to solve this problem:

    (Cos(x)Sec(x))/Cot(x)

    The question asks:

    "Simplify the trigonometric expression. Once you have simplified the expression completely, change all trigonometric functions in the simplified expression to sines and cosines. Finally, let s = sin(x) and c = cos(x) and enter your answer below. For example, if the expression simplifies to tan(x), you would enter s/c in the answer blank. (Note that your answer should use lower-case letters.)"

    I'd really appreciate it if anyone could help, thank you very much in advance.
    \frac {\cos x \sec x}{\cot x} = \frac {\cos x \frac 1{\cos x}}{\frac {\cos x}{\sin x}}

    = \frac 1{\frac {\cos x }{\sin x}}

    = \frac sc
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Oct 2007
    Posts
    11
    Haha, wow, thanks a lot man. I feel really dumb for that, cause I got it down to (cos(1/cos))/(cos/sin) but then I overcomplicated the problem and tried to make it (cos/(cos/sin)) x (1/cos)/(cos/sin). But again, thank you for your help.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 6
    Last Post: October 6th 2011, 01:48 PM
  2. Simplify the trigonometric expression
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: December 15th 2010, 02:16 AM
  3. Replies: 2
    Last Post: June 16th 2008, 10:58 PM
  4. Please help me simplify this expression!
    Posted in the Algebra Forum
    Replies: 1
    Last Post: June 1st 2008, 03:24 PM
  5. Please help me simplify this expression!
    Posted in the Algebra Forum
    Replies: 1
    Last Post: June 1st 2008, 03:17 PM

Search Tags


/mathhelpforum @mathhelpforum