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

Question

asked Sep 9, 2020 163k views

2 Answers

Muhammad Sulman · Answer 1 · 2020-09-13T23:29:17+0000

Answer:

x = 2

Explanation:

Remember:

$sin \theta = (Opposite)/(Hypotenuse)$

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

$sin 30^\circ = (x)/(4)$

x = 0.5 *4

x = 2