1.

Let △=∣∣∣∣sinnπcosnπ2cos2xcosxsinxtannπ−12cos(2nπ)∣∣∣∣ and △=0 ∀ x∈R. Then the value of n can be

Answer»

Let △=∣∣
∣
∣
sinnπcosnπ2cos2xcosxsinxtannπ−12cos(2nπ)∣∣
∣
∣
and △=0 ∀ x∈R. Then the value of n can be



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