Question

If tan A = 1/2, and tan B = 1/3, and tan(A+B) = (tan A + tan B)/ (1 - tan A tan B), then A+ B = ​

Answer 1

Answer:

Correct option is

B

1

Given tanA=

2

1

,tanB=

3

1

tan(A+B)=

1−tanAtanB

tanA+tanB

=

1−

2

1

×

3

1

2

1

+

3

1

=

6

6−1

6

3+2

=

6

5

6

5

=1