- Maths problem: is angle between two vectors affected by their direction?

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15.00g of Si reacts with 25.00g of F2 to produce 28.67g of SiF4. Which reactant is the limiting reagent? If a+b+c=4, ab+ac+bc=6, and abc=3, what is 1/a + 1/b + 1/c? The silica content of magma greatly affects its viscosity. Magma with a high silica content has a? Verify that M(u,v)=A +u(B-A) +v(C -A) ( A,B,C vectors) is a parametric representation of surface of the triangle A(1,0,0) B(0,-1,2) C(0,2,1)? Find a positive angle, less than 360 degrees, that is coterminal with a 1715 degree angle. Please show steps!!?