Question

Prove that (tana +2) (2 tan A.+1)
=5tanA +2 Sec square a
​

Answer 1

Answer:

2sec^2 ∅+5 tan ∅

Step-by-step explanation:

(tan ∅ +2) (2 tan∅+1)= 5 tan∅+2sec^2∅

2tan^2+5tan∅+tan∅+2

2tan^2∅+2+5tan∅

2(tan^2 ∅+1)+5tan∅

2sec^2 ∅+5 tan ∅