Question

Help me please I really need help

Answer 1

Answer:

$17\sqrt{2}$ ft

Step-by-step explanation:

take angle b as reference angle

using sin rule

sin 45 = opposite / hypotenuse

$\frac{1}{\sqrt{2} }$ = 17 / BC

BC =17 / $\frac{1}{\sqrt{2} }$

BC = 17 * $\sqrt{2}$

BC =  $17\sqrt{2}$ ft

Answer 2

Answer:

BC = 17$\sqrt{2}$ ft

Step-by-step explanation:

Using the sine ratio in the right triangle and the exact value

sin45° = $\frac{1}{\sqrt{2} }$ , then

sin45° = $\frac{opposite}{hypotenuse}$ = $\frac{AC}{BC}$ = $\frac{17}{BC}$ = $\frac{1}{\sqrt{2} }$ ( cross- multiply )

BC = 17$\sqrt{2}$ ft