Let {a}, {b}, {c} be three unit vectors such thatb \\times(c \\times a)=\frac{c}{2}. If a and c are non-parallel, then the angles which b makes with {c} and a are respectively

Correct Answer is : 90° and 60°

UPSEE 2019 Solved Paper

Question : 133 of 150

Marks: +1, -0

Let a,b,c be three unit vectors such thatb×(c×a)=

. If a and c are non-parallel, then the angles which b makes with c and a are respectively

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