1.

If tan22∘+tan24∘+⋯+tan288∘=a, then the value of 89∘∑θ=1∘ sin4θ+cos4θsin2θ cos2θ is

Answer»

If tan22∘+tan24∘+⋯+tan288∘=a, then the value of 89∘∑θ=1∘ sin4θ+cos4θsin2θ cos2θ is



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