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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

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

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

**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

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

(

**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

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

**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 them14 Answers · Family & Relationships · 14/10/2007

**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

**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