1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Basic Trig help

  1. Mar 7, 2007 #1

    FAT

    User Avatar

    okay so I need help with this. Directions say: "Use the basic identities to simplify to a basic trig function"

    Tanx + Tanx
    csc(squared)x + sec(squared)x


    The lines are fractions. tanx/scs(squared)x for example. I need help with this thanks
     
  2. jcsd
  3. Mar 7, 2007 #2
    A lot of people define csc(x) as 1/sin(x) and sec(x) as 1/cos(x). Furthermore, some people even define tan(x) as sin(x)/cos(x). Does this help you?
     
  4. Mar 8, 2007 #3

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    It is not at all clear what you mean. Since you have "+" both above and below the fractionline I would have interpreted that as
    [tex]\frac{tan x+ tan x}{csc^2 x+ sec^2 x}[/tex]
    but then the numerator is obviously 2tan x.

    Apparently you mean
    [tex]\frac{tan x}{csc^2 x}+ \frac{tan x}{sec^2 x}[/tex]
    As ZioX said, rewrite everything in terms of sin x and cos x and simplify.
    (It might be easier to factor tan x out of that and concentrate on what's left!)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Basic Trig help
Loading...