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  1. sin(u) = 4/5 = y/z x^2 + y^2 = z^2 x^2 + 4...x^2 = 25 - 16 x^2 = 9 x = 3 1) cos(u) = x/z = 3/5 <==== positive since... to take the positive root. sin(u/2) = + √( (1-cos u)/2 ) sin(u/2) = √( (1- (3...

    3 Answers · Science & Mathematics · 17/08/2011

  2. By definition u.v x w = |v x w| |u| cosθ where θ is the angle between u and v x w... where Θ is the angle between v and w. So u.v x w = |v||w| sinΘ |u| cosθ and this is equal to |u||v...

    2 Answers · Science & Mathematics · 03/10/2009

  3. suppose u,v are in U∩V. since u.v are in U, u+v is in U, since U is a subspace. since u,v ...

    2 Answers · Science & Mathematics · 04/06/2011

  4. u = arcsin[√(x² + y²)] ∂u/∂x = 1/√[1 - (x² + y²)] • x/√(x² + ...) / √[1 - (x² + y²)] = tan[u] Note that u = arcsin[√(x² + y²)] implies that sin[u...

    1 Answers · Science & Mathematics · 18/07/2011

  5. Multiply everything by (u-1)(u-3) and then cancel identical terms to clear the fractions: (u+7...3) / (u-3) (u+7)(u-3) + (u-1)(u-3) = (u+3)(u-1) Multiply everything out: u^2 + 4u - 21 + u^2 - 4u + 3 = u^2 + 2u - 3 Combine terms: 2u^2 - 18...

    4 Answers · Science & Mathematics · 09/05/2011

  6. (u + v + w) · (u + v + w) = (u + v + w) · u + (u + v + w) · v + (u + v + w) · w = (u · u + v · u + w · u) + (u · v + v · v + w · v) + (u · w + v · w + w · w) = (u · u + 0 + 0) + (0 + v · v + 0) + (0 + 0 + w · w), since u,v,w are mutually perpendicular...

    3 Answers · Science & Mathematics · 14/06/2015

  7. sin(u) = 1/3 = y/z x^2 + y^2 = z^2 x^2 + 1^2 = 3^2 x^2 = 9 - 1 x^2 = 8 x = 2√(2) cos(u) = x/z = 2√(2)/3 sin(v) = 1/4 = y/z x^2 + y^2 = z^2 x^2 + 1^2 = 4^2...

    4 Answers · Science & Mathematics · 06/11/2011

  8. u dont u just feel it. like 4 me if i talk to someone,(a guy) for a while and i feel some sort of attraction, i just kinda get a crush on them and i know i like them

    14 Answers · Family & Relationships · 14/10/2007

  9. u = -b + 21 u = -2b + 30 Check it out - both equations are ...u" already. Thus, -b + 21 = -2b + 30 -b + 2b = 30 - 21 b = 9. u = -b + 21 = -(9) + 21 = 12 u = -2b + 30 = -2(9) + 30 = 12 So, the ...

    2 Answers · Science & Mathematics · 01/06/2010

  10. u will feel it all in u r heart...love is not all butterflies all day long. love...sad....so if u are able to be with someone through good or bad, then u know it is real love. there are alot of other things...

    8 Answers · Family & Relationships · 05/07/2009

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