Question

1. choose the correct answer if jk = 3 cm.

use the value $s_2 = 6.2$
find $cos l$.
$\frac{6.2}{7} \approx 0.9$
$\frac{6.2}{3} \approx 2.1$
$\frac{3}{7} \approx 0.4$
$\frac{3}{6.2} \approx 0.5$

Explanation:

Step1: Recall cosine definition for angle L

For right triangle $\triangle JKL$ (right-angled at $K$), $\cos L = \frac{\text{Adjacent side to } L}{\text{Hypotenuse}}$

Step2: Identify relevant sides

Adjacent side to $L$ is $s_2 = 6.2$ cm, hypotenuse $JL = 7$ cm.

Step3: Calculate $\cos L$

$\cos L = \frac{6.2}{7} \approx 0.9$

Answer:

$\frac{6.2}{7} \approx 0.9$