Question
Question: Let <img src="https://cdn.pureessence.tech/canvas_175.png?top_left_x=0&top_left_y=1775&width=300&hei...
Let and c be non-coplanar unit vectors equally inclined to one another at an acute angle q. Then ∣[a,b,c]∣ in terms of q is equal to
A
(1 + cosq) cos2θ
B
(1 + cosq) 1−2cos2θ
C
(1 – cosq) 1+2cos2θ
D
None of these
Answer
(1 – cosq) 1+2cos2θ
Explanation
Solution
[abc]2 =