Question

find the value of tan1 tan2 tan3 .........tan 89​

Answer 1

Answer:

1

Step-by-step explanation:

we know that

tan(90-A)=cot

and

cot=1/tan

then

tan(90-1)tan(90-2)tan(90-3).............tan3 tan2 tan1

1/cot1 1/cot2 1/cot3..................tan3 tan2 tan1

=1