Question

(10) If tanA=a, tan2B=b and tanA+ tan2B= tan3A then
(A) a=b
(B) ab =1
(C) a+b=0
(D) b=2a
ca​

Answer 1

Answer:

D) b=2a

Step-by-step explanation:

TANA=a

TAN2B=b

TANA+TAN2B=TAN3A

SO

A+B=3A

A=B

PUTTING THIS VALUE IN QUESTION

TANA=a

TAN2A=b

TANA=b/2

Comparing both sides

a=b/2

b=2a

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