1.

If α,β are the roots of the equation ax2+bx+c=0, then the value of determinant ∣∣∣∣∣1cos(α−β)cosαcos(α−β)1cosβcosαcosβ1∣∣∣∣∣ is equal to

Answer»

If α,β are the roots of the equation ax2+bx+c=0, then the value of determinant ∣∣
∣
∣
∣
1cos(α−β)cosαcos(α−β)1cosβcosαcosβ1∣∣
∣
∣
∣
is equal to




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