Question

The determinant ∆ = `|(cos(x + y), -sin(x + y), cos2y),(sinx, cosx, siny),(-cosx, sinx, cosy)|` is independent of x only.

विकल्प

• True

• False

Answer 1

This statement is True.

Explanation:

Apply R₁ → R₁ + sinyR₂ + cosyR₃, and expand