Question

tan^2A+2tanA-8 pls give answer step by step

Answer 1

Step-by-step explanation:

A=30⇒2A=60

tan2A=1−tan2A2tanA.

A=30 degrees

Show that:

tan60∘=1−tan230∘2tan30∘

RHS:

1−tan230∘2tan30∘=1−312×31=2/32/3

=3/3

=3

=tan60∘

=LHS.