Question

The value of the determinant |cos(A -  P) cos(A - Q) cos (A -R),cos(B - P)cos(B - Q) cos (B - R) cos (C - P) cos (C - R) cos(C - P) cos(C - Q) cos (C - R)| is

(a)   0

(b)  1

(c)  sin2A sin2B sin2C

(d)  None of these

Answer 1

Correct option  (a) 0

Explanation:

We can write the given determinant as the product of two determinants