Question

tan5°tan25°tan30°tan65°tan85°=?​

Answer 1

Answer:

$<font color ="blue">$ ✨ Hearthacker143 ✨

Step-by-step explanation:

Tan5 tan25 tan45 tan65 tan85

=tan(90-85) tan(90-65) tan45 tan65 tan85

=cot85 cot85 * 1* tan65 tan85

=1*1*1

=1.