What is the angle between $a = (3i - 4j)$ and $b = (6i + 4j)$?

Similar Questions

Two forces $F_{1} = (7i + 8j)N$ and $F_{2} = (3i + 4j)N$ act on a particle. Find the magnitude a...

Age in years 10 - 14 15 - 19 20 - 24 25 - 29 30 - 34 Frequency 6 8 14 10 12 ...

From the diagram above, $h[g(3)]$ is...

If $y = x^{2} - 6x + 11$ is written in the form $y = a(x - h)^{2} + k$, find the value of \((a +...

Which of the following is nor a measure of central tendency? ...

A force of 230N acts in its direction 065$^o$. Find its horizontal component....

Given that $(\sqrt{3} - 5\sqrt{2})(\sqrt{3} + \sqrt{2}) = p + q\sqrt{6}$, find q....

A binary operation * is defined on the set of real numbers R, by a* b = -1. Find the identity elemen...

If $f(x) = \frac{4}{x} - 1, x \neq 0$, find $f^{-1}(7)$....

Given that $r = 3i + 4j$ and $t = -5i + 12j$, find the acute angle between them....