Trigonometry

(tan1°)² + (tan3°)² + (tan5°)².............(tan89°)² = ?
Sorry for not mentioning answer
Ans) 4005

@tusharrathore
plz provide answer.
is it irrational or rational.

(tan1°)² + (tan3°)² + (tan5°)².............(tan89°)² = ?
Sorry for not mentioning answer
Ans) 4005
@tusharrathore
plz provide answer.
is it irrational or rational.