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Consider the triangle ABC with vertices ...

Consider the triangle ABC with vertices A(1,2,3) , B(-1, 0, 4) and C(0, 1, 2)
(a) Find `vec (AB)` and `vec (AC)`
Find `angle A`.
(c) Find the area of triangle ABC.

Text Solution

Verified by Experts

The correct Answer is:
`- hat i - hat j - hat k`
(b) `angle A = cos^(-1)((1)/(sqrt3))`
(c) `(3)/(sqrt2)` sq.units.
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