Question

Help please. show work. open attachment.

Answer 1

Angle A is found by knowing tht angle sin a triangle add up to 180

A + B + C = 180 so
A = 180 - B - C
A = 180 - 68 - 46
A = 66

Use sine law, which says sinA / a = sin B / b

$\displaystyle \frac{\sin A}{a} = \frac{\sin B}{b} \\ \frac{b\sin A}{a} = \sin B \\ \\ b = \frac{a \sin B}{\sin A} \\ \\ b = \frac{9 \sin 68}{\sin 66} \\ \\ b = 9.13$

b = 9.13