Question

Find the length of ab

Answer 1

`AB \approx 5.6 \text{ cm}`

Explanation:

We can find the length of side AB using the trigonometric ratio cosine.

`\cos(\theta) = \frac{\text{adjacent}}{\text{hypotenuse}}`

↓ plugging in the given values

`\cos(62\°) = (AB)/(12)`

↓ multiplying both sides by 12

`12 \cdot \cos(62\°) = AB`

↓ plugging into a calculator

`\boxed{AB \approx 5.6 \text{ cm}}`