Ask Experts Questions for FREE Help !
Ask
    sweetie_rearea2008's Avatar
    sweetie_rearea2008 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Dec 17, 2006, 07:41 PM
    Pre calc / Trig
    Can anyone tell me how to work/prove this identity?! I just don't understand! Cot*sec =1/sin


    help asap please!
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #2

    Dec 17, 2006, 07:45 PM
    do you have your definitions for cot and sec in terms of cos and sin and tan?

    It should be straight forward :)
    rawpotatoeater37's Avatar
    rawpotatoeater37 Posts: 244, Reputation: 8
    Full Member
    		  
    #3

    Dec 17, 2006, 07:49 PM
    cot x * sec x = 1/sin x

    cot x is the opposite of tan x, which is sin x/cos x. Therefore cot x is cos x/sin x.

    sec x is the opposite of cos x. Therefore sec x is 1/cos x.

    cos x/sin x * 1/cos x =...
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #4

    Dec 17, 2006, 07:53 PM
    Thank you for doing someone's homework for them.
    rawpotatoeater37's Avatar
    rawpotatoeater37 Posts: 244, Reputation: 8
    Full Member
    		  
    #5

    Dec 17, 2006, 08:02 PM
    Sorry- I'm new at this.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #6

    Dec 18, 2006, 05:26 AM
    It's okay, when it's obviously a homework question we like to just hint :)
    rawpotatoeater37's Avatar
    rawpotatoeater37 Posts: 244, Reputation: 8
    Full Member
    		  
    #7

    Dec 18, 2006, 09:13 AM
    Sounds good
    Thanks!
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #8

    Jan 2, 2007, 03:19 AM
    I think that your statement of "cot is the opposite of tan" is particularly misleading also. Reciprocal is a better word.

    *nitpick*
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

Trig [ 2 Answers ]

can someone help me solve this problem please 1/1-sinx + 1/1+sinx=2sec^2x

Trig [ 1 Answers ]

How do I get "sec x - tan x" equal to "cos x / 1 + sin x"

NJ Resident - NYC job - Tax calc [ 5 Answers ]

Hi, I am currently split on 2 opportunities that I have in hand and need to make a decision. One is a job in NYC and the other a job in NJ. I am considering all aspects of the jobs, but need to make APPLES to APPLES comparison in Dollar terms. I need to calculate the tax I would pay...

Pre-Cal trig [ 1 Answers ]

A 30 ft ladder leans against the side of a house. At the point where the ladder and house meet, it makes a 72 degrees. What is the height of the house ?

View more questions Search