Results 1 to 4 of 4

Math Help - Urgent! Please, Trig Help!

  1. #1
    Newbie
    Joined
    Jan 2006
    Posts
    20

    Urgent! Please, Trig Help!

    Hello, I have had quite a bit of troule with three of the trig problems that i had for homework. If you could show me the steps to get the answer that would be great because i'm sure there's going to be a problem like these on a quiz we will have pretty soon.

    1. sec(x)+csc(x)
    -------------- Express in 1 trig function
    1+(tan(x))

    2. cos(x)
    ----------- + tan(x) Express in 1 trig function
    1+sin(x)

    3. (sin(x))(cox(x)+sin(x)tan(x))


    Thanks ALOT for the help
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by aussiekid90

    1. sec(x)+csc(x)
    -------------- Express in 1 trig function
    1+(tan(x))
    \frac{\sec(x)+\csc(x)}{1+\tan(x)}=\frac{1/\cos(x)+1/\sin(x)}{1+\tan(x)}= \frac{\sin(x)+\cos(x)}{\cos(x) \sin(x)}\ \frac{1}{1+\tan(x)}=\frac{\sin(x)+\cos(x)}{\sin(x) [\cos(x)+\sin(x)]}=\csc(x)

    RonL
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by aussiekid90
    2. cos(x)
    ----------- + tan(x) Express in 1 trig function
    1+sin(x)
    \frac{\cos(x)}{1+\sin(x)}+\tan(x)=\frac{\cos(x)}{1  +\sin(x)}+\frac{\sin(x)}{\cos(x)}= \frac{\cos ^2(x)+\sin(x)+\sin ^2(x)}{(1+\sin(x))\cos(x)}=\frac{1+\sin(x)}{(1+ \sin (x)) \cos(x)}=\sec(x)

    RonL
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by aussiekid90

    3. (sin(x))(cox(x)+sin(x)tan(x))
    \sin(x) (\cos(x) + \sin(x) \tan(x))=\sin(x) \cos(x) + \sin ^2(x) \tan(x) =\sin(x) \cos(x) + \frac{\sin ^3(x)}{ \cos(x)}=\frac{\sin(x) \cos^2(x)+\sin^3(x)}{\cos(x)}

    =\frac{\sin(x)(\cos^2(x)+\sin^2(x))}{\cos(x)}= \frac {\sin(x)}{\cos(x)}=\tan(x)

    RonL
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Need Urgent Trig Help!
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: March 30th 2010, 05:29 PM
  2. URGENT HELP!!! lol (Trig Problems)
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: May 3rd 2009, 05:50 PM
  3. Urgent...Trig...help please!!!!
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: February 9th 2009, 09:07 AM
  4. urgent trig problem
    Posted in the Trigonometry Forum
    Replies: 5
    Last Post: July 31st 2008, 04:21 PM
  5. Urgent Help With Trig Proofs
    Posted in the Trigonometry Forum
    Replies: 7
    Last Post: June 25th 2008, 03:00 AM

Search Tags


/mathhelpforum @mathhelpforum