Question

tan34tan16tan74tan56​

Answer 1

Tan48° × Tan16° × Tan42° × Tan74°

(Tan48° × Tan42°) × (Tan16° × Tan74°)

=> (Tan(90°-42°) × Tan42° × Tan(90°-74°) × Tan74°

We know that,  

Tan (90° - Theta) = Cot Theta

Therefore,

=> Cot42° × Tan42° × Cot74° × Tan74°

=> 1 × 1

=> 1

Answer 2

Answer:

tan(90-34).tan(90-16).tan74.tan56

(tan74*tan56) * (tan74*tan56)

( 1 ) * ( 1 )

1....answer