Question

In the right triangle shown ∠A=30° and BC=4. How long is BC?

Answer 1

Answer:

x = 2

Step-by-step explanation:

Remember:

$sin \theta = \frac{Opposite}{Hypotenuse}$

In the triangle given, the opposite angle to 30 degrees is x and the hypotenuse is 4. Substituting these numbers into the formula gives:

$sin 30^\circ = \frac{x}{4}$

$x = 0.5 \times4$

$x = 2$