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1. Find the exact values of sin(u/2), cos (u/2), and tan (u/2)?

cos u = 3/5 implies this: (3)²...25 - 9) y = √16 y = 4. So sin u = 4/5 The trig function for cos (u/2...tan (u/2) = (√5/√5)(½) tan (u/2) = (1)(½) tan (u/2) = ...

1 Answers · Science & Mathematics · 02/08/2009

2. when u were 12...?

no.. 12.. u're still a kid.. i started shaving wen im 13 and a half cleanser.. yeh sure.. cos u're starting a puberty stage u'll have like oil on ur skin n stuff...

15 Answers · Beauty & Style · 25/05/2007

3. Prove span(u,v,w) = span(u,v) <=> u,v,w are LD?

If u and v are linearly independent, then whenever c1 u + c2 v = 0 (a zero vector), then c1 = c2 = 0 (as scalars). Also note that span(u, v) for example equals the set of all {c1 u + c2 v} where c1 and c2 range over...

1 Answers · Science & Mathematics · 22/03/2012

4. u-substitution problem?

∫ dx / x sqrt(x+4) u^2 = x+4 2udu = dx ∫ dx / x sqrt(x+4) = ∫ 2u du / (u^2-4)u = ∫ 2 du / (u^2-4) = 2 ∫ du/(u+2)(u-2) 1/(u+2)(u-2) = A/(u+2) + B/(u-2) 1 = A(u-2) + B(u+2) equate the...

2 Answers · Science & Mathematics · 06/08/2010

5. how can u no if a guy likes u?

u cant know 100%.. well, to know for sure, ask him directly. but to try to be sure abt his feelings, try the following: u knw he likes u back if: -he txts u bak wenever u txt him..thus...

7 Answers · Family & Relationships · 22/12/2006

6. 15 RANDOM QUESTIONS ABOUT U!?

 What color hair do u have? Dark brown. (:  What color eyes do u have? Once...15 pull-ups/chin-ups? Yessir.  What kinda pizza do u like? You know ;] the good stuff.  Are u outgoing? Sometimes...

40 Answers · Entertainment & Music · 07/08/2009

7. sec(arctan u + arccos v)?

sec [ arctan(u) + arccos(v)] let arctan(u) = A tan A = u ==> opposite side = u and adjacent side = 1, hypotenuse = √(u^2 + 1) sin A = u / √(u^2 + 1) ------(1) and cos A = 1 / √(u^2 + 1...

1 Answers · Science & Mathematics · 27/07/2010

8. Proof that Proj-u-V is orthogonal to Orth-u-V?? ?

I'll let P(u) denote the projection of u along V and O(u) = u - P(u). ...let be the dot product. We want to show, for all w in V, that (O(u),w) = (u-P(u),w) = ((u-v),w) = 0. Well, how do we find v? v ...

1 Answers · Science & Mathematics · 23/01/2009

9. Let U and W be subspaces of R3?

Since dim U = 1, we have that U = span{u} for some u in U. Likewise, dim... otherwise. Then, there exists a nonzero vector v in U ∩ W. So, v = au for some nonzero scalar a and v = bv + cw for some ...

1 Answers · Science & Mathematics · 02/02/2015

10. u over 5 plus u over 10 minus u over 6 equals 1?

(u/5) + (u/10) - (u/6) = 1 First thing I would do is multiply everything by 30 to get rid of all the fractions 6u + 3u - 5u = 30 9u - 5u = 30 4u = 30 u=30/4=7.5 _/

1 Answers · Education & Reference · 24/08/2008