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

    Feb 23, 2013, 09:14 AM
    trig problem
    Hi,

    I need a little help with an equation I got for math. It is as following:
    sinē (x) . Cosē (y) + cosē (x) . Sinē (y) + sinē (x) . Sinē (y) + cosē (x) . Cosē (y) = 1

    Now I tried to complete the exercise, but I got stuck. Let me show you what I did.

    We know:
    sin (x) . Cos (y) + cos (x) . Sin (y) = sin (x + y)

    So I thought:
    sinē (x) . Cosē (y) + cosē (x) . Sinē (y) = sinē (x + y)

    Same for:
    sin (x) . Sin (y) + cos (x) . Cos (y) = cos (x - y)

    So I also thought:
    sinē (x) . Sinē (y) + cosē (x) . Cosē (y)= cosē (x - y)

    That gives us:
    sinē (x+y) + cosē (x-y)

    And that's where I got stuck. So anybody knows where I made an error / knows how I should continue?

    Cheers,
    A student
    Scottgesq's Avatar
    Scottgesq Posts: 2, Reputation: 1
    New Member
     
    #2

    Feb 23, 2013, 09:18 AM
    Sorry I posted this in the wrong category, feel free to delete this admins.
    My apologies.
    Wondergirl's Avatar
    Wondergirl Posts: 39,354, Reputation: 5431
    Jobs & Parenting Expert
     
    #3

    Feb 23, 2013, 09:35 AM
    >thread closed<

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

Nice and hard trig problem [ 1 Answers ]

16^sin(20)^sin(40)^sin(60)^sin(80)=3

Need help verifying/transforming a trig problem [ 1 Answers ]

sec(x)-cos(x)/tan(x)=sin(x)

Applied trig problem? [ 1 Answers ]

How long is the length of a 1" DIAMETER HOLE DRILLED THRU THE CENTER OF A 2" ball bearing?

Trig problem [ 3 Answers ]

Can someone tell me how to solve for the angles of a triangle, when all three sides are known, but all angles are un-known.. Any help appreciated. Don Gryder


View more questions Search