1.

If f(α,β)=∣∣∣∣cosα−sinα1sinαcosα1cos(α+β)−sin(α+β)1∣∣∣∣, then

Answer»

If f(α,β)=∣∣
∣
∣
cosα−sinα1sinαcosα1cos(α+β)−sin(α+β)1∣∣
∣
∣
,
then



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