Question

Prove that
tan100°+tan125°tan100°+tan125°=1

Answer 1

Answer:

tan ( 100° + 125° ) = tan 225°  (but tan 225° = tan ( 180° + 45° ) = tan 45° = 1 )

 ( tan 100° + tan 125° ) / ( 1 - tan 100° tan 125° ) = 1 

 tan 100° + tan 125° = 1 - tan 100° tan 125° 

 tan 100° + tan 125° + tan 100° tan 125° = 1

Read more on Brainly.in - https://brainly.in/question/11807#readmoreStep-by-step explanation: