Answer:
C
![(2)/(1)](https://img.qammunity.org/2020/formulas/chemistry/middle-school/b5nhvxv6llk7fopb6defscy4x5izhyg6td.png)
Explanation:
Recall the mnemonics SOH-CAH-TOA
The tangent ratio is the ratio of the opposite side of the right triangle to the adjacent side.
From the diagram, the side opposite to <B is 2 units and the adjacent side is 1 unit.
This implies that;
![\tan \angle B=(2)/(1)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/o75dqpmaqbiazkbo98itan2qijtl11e0oe.png)
The correct choice is C