If -a- - -b-c- - 2 and a-b - b-c - c-a -2- then -a b c -cos 45- is equal to

[ a b c ]^2 = a.a amp;a.b amp; a.c b. a amp;b.b amp; b.c c. a amp;c.b amp; c.c = 4 amp; 2 amp;2 2 amp; 4 amp; 2 2 amp; 2 amp; ...

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Work Done as Dot Product

If |a| = |b|=...

Question

If $| \to a | = | \to b | = | \to c | = 2$ and $\to a \cdot \to b = \to b \cdot \to c = \to c \cdot \to a = 2,$ then $[\to a \to b \to c] cos 45^{\circ}$ is equal to

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| a | = 2

, | b | = 3

| c | = 4

a + b + c = 0

b \cdot c + c \cdot a + a \cdot b

(a \times b) \cdot (c \times d) + (b \times c) \cdot (a \times d) + (c \times a) \cdot (b \times d)

\to a, \to b

\to c

\to a + \to b + \to c = \to 0

λ = \to a \cdot \to b + \to b \cdot \to c + \to c \cdot \to a

\to d = \to a \times \to b + \to b \times \to c + \to c \times \to a

(λ, \to d)

A, B, C

\frac{A \cdot (B \times C)}{(C \times A) \cdot B} + \frac{B \cdot (A \times C)}{C \cdot (A \times B)}

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