Question

Ans is independent of ( n ) ( u(a) n )

# 45. The value of the de determinant I a? a 11 cos(nx) cos (n + 1)x cos(n + 2)x is independent of sin (na) sin (n + 1x sin(n + 2)x (a) n o bogidde (b) alolevad 8€ (c) x (d) None of these

Solution