Question

find the tan 1× tan 89⁰=​

Answer 1

Answer:

tan1°×cot(90°-1°)

tan1°×cot1°

1

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Answer 2

We know,

Tanx × Cotx=1

Tanx = 1/ Cotx

Tanx = Cot (90°-x)

Therefore

Tan 89°= 1/Cot 89°

Tan 1=Cot (90-1)=Cot 89°

substituting the values,

Tan 1× tan 89= Cot 89×1/Cot 89= 1

ANSWER:1