Question

Value of tan20°+tan40°....+tan180°

Answer 1

this is wrong question please check your question and I also don't understand

Answer 2

Answer:

Answer :

a) 0

Step-by-step explanation :

tan20° + tan40° + tan60° + ... + tan180°

= tan20° + tan160° + tan40° + tan140° + tan60° + tan120° + tan80°+ tan100° + tan180°

= tan20° + tan(180° - 20°) + tan40° + tan(180° - 40°) + tan60° + tan(180° - 60°) + tan80° + tan(180° - 80°) + tan180°

= tan20° - tan20° + tan40° - tan40° + tan60° - tan60° + tan80° - tan80° + tan180°

= tan180°

= 0