Results 1 to 6 of 6

Math Help - Not sure how to do these

  1. #1
    Junior Member
    Joined
    Jul 2009
    Posts
    51

    Not sure how to do these

    Write the trigonmetric expression in terms of sine and cosine and then simplify
    1. CosTcscT


    Simplify
    1. Cos^3x+Sin^2cCosx
    Last edited by mr fantastic; July 14th 2009 at 02:11 PM. Reason: Remved unnecessary link to another thread. Removed excessive space.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,621
    Thanks
    426
    Write the trigonmetric expression in terms of sine and cosine and then simplify
    1. CosTcscT

    \cos{t} \cdot \frac{1}{\sin{t}}


    Simplify
    1. Cos^3x+Sin^2cCosx

    \cos{x}(\cos^2{x} + \sin^2{x})

    finish up
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Jul 2009
    Posts
    51
    Quote Originally Posted by skeeter View Post
    Write the trigonmetric expression in terms of sine and cosine and then simplify
    1. CosTcscT

    \cos{t} \cdot \frac{1}{\sin{t}}

    Is it really that simple?

    So on CosT TanT would the anser be Sin?
    Last edited by mr fantastic; July 14th 2009 at 02:12 PM. Reason: Merged posts, added close quote tag.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,621
    Thanks
    426
    Quote Originally Posted by Nightasylum View Post
    Quote Originally Posted by skeeter View Post
    Write the trigonmetric expression in terms of sine and cosine and then simplify
    1. CosTcscT

    \cos{t} \cdot \frac{1}{\sin{t}}

    Is it really that simple?
    you have one more step to do ... what is \frac{\cos{t}}{\sin{t}} ?


    So on CosT TanT would the anser be Sin?
    "Sin" means nothing ... if you said \sin{t} , then you would be correct.

    Always use proper mathematical notation ... don't get lazy.
    Last edited by mr fantastic; July 14th 2009 at 02:14 PM. Reason: Added close quote tag.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Junior Member
    Joined
    Jul 2009
    Posts
    51
    Quote Originally Posted by skeeter View Post
    you have one more step to do ... what is \frac{\cos{t}}{\sin{t}} ?
    Cot= Cos/sin
    Last edited by mr fantastic; July 14th 2009 at 02:34 PM. Reason: Added close quote tag - again!
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Super Member
    Joined
    May 2009
    Posts
    527
    Quote Originally Posted by Nightasylum View Post
    Cot= Cos/sin
    And if I was grading this, I would not give you full credit. As skeeter said, always write the trig functions with the angles!!!!

    By the way,
    So on CosT TanT would the anser be Sin?
    Where did this come from? Is this a separate problem? I first thought that it came from your other question:
    Simplify
    1. Cos^3x+Sin^2cCosx
    but if that's the case, \cos t \tan t would be incorrect.


    01
    Follow Math Help Forum on Facebook and Google+


/mathhelpforum @mathhelpforum