Without using trigonometric tables, prove that: tan 71° - cot 19° = 0

Question

Without using trigonometric tables, prove that: tan 71&deg; - cot 19&deg; = 0

Philoid · Accepted Answer

Consider tan 71° - cot 19° = tan 71° - cot (90 - 71)°

= tan 71° - tan 71°

= 0

Hence, proved.

Without using trigonometric tables, prove that:tan 71° - cot 19° = 0