Question

Which of the following is equal to tan 10°×tan 20°×tan 30°×......... ×tan80° ?

Answer 1

Answer:

...... 1

Step-by-step explanation:

=tan10°×tan20°×tan30°×.............×tan60° ×tan70°×tan80°

>>>>>. tanA×tanB=1

>>. A+B =90°

..tan10°×tan80°×tan20°×tan70°×tan30°×tan60°..........tan45°.........

=1×1×1×........1×1

=. 1

..... hope it's helpful