Question

Please help before 11 pm
B=?

Answer 1

155.24

Explanation:

Answer 2

`\text{Apply sine rule,}\\\\~~~~~~~~(a)/(\sin A) = (b)/(\sin B) = (c)/(\sin C)\\\\\\\implies (b )/(\sin B) = (c)/( \sin C)\\\\\\\implies b = (c \cdot \sin B)/(\sin C)\\\\\\\implies b = (197\sin 52^\circ)/(\sin 51^(\circ))~~~~~~~~~;\left[\angle C = 180^(\circ) - 77^(\circ) -52^(\circ) = 51^(\circ) \right]\\\\\\\implies b \approx 200`