Q. If $tan (α + β) = 3, tan (α - β) = 1$ then $tan 6 β$

6389 188 Trigonometric Functions Report Error

A

-1

12%

B

0

19%

C

1

61%

D

2

8%

Solution:

Let $(α + β) = 6 0^{\circ}$
$(α - β) = 4 5^{\circ}$
$\Rightarrow 2 β = 1 5^{\circ}$
$\Rightarrow 6 β = 4 5^{\circ}$