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

    Feb 2, 2008, 12:14 PM
    Proving trig identity
    Hey guys I've been working on this one trig identity for about an hour and I can't seem to make it work it out. Any help will be appreciated

    (tan/1+cos) + (sin/1-cos) = cos + sec*csc
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
    Ultra Member
    		  
    #2

    Feb 2, 2008, 12:54 PM
    The identity is equal to cot(x)+csc(x)sec(x), not cos(x).



    You can cross multiply, this gives:



    Now, if you expand and simplify each, you will whittle it down to the right side.

    Which is cot(x)+csc(x)sec(x). Having that cos(x) in there may have been the problem.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Proving A Trigonometric Identity [ 1 Answers ]

Usually I am pretty good at these, but this one is killing me. Please help! Never mind I solved it. Here's the answer if anyone is curious. \Large\frac{sin^2\theta-tan\theta}{cos^2\theta-cot\theta}=tan^2\theta ...

Proving Trig Identities [ 2 Answers ]

how would you prove sin4x - cos4x = sin2x-cos2x as well as sin4x + 2sin2xcos2x +cos4x = 1 :confused:

Trig identity [ 5 Answers ]

cot(x) + tan(x) 1-tan(x) 1-cot(x) = 1+tan(x)+cot(x) Please verify if you can!!

Trig identity [ 3 Answers ]

Yes me again - I have one more that is it!! I need to find out if the following is an identity or not: _______ l cos2O = cosO (that is square root cos squared theta equals cos theta) Any help is really appreciated!! Thanks skr

Trig identity [ 3 Answers ]

HELP - I am really bad at trig and need some assistance... I have to verify sin X ______ = csc X - cot anx 1+ cos X Can anyone help me out - give me a place to start??

View more questions Search