Use trigonometry to find the unknown side (round to 1 decimal)

Question

asked Feb 12, 2022 172k views

1 Answer

Lucky Man · Answer 1 · 2022-02-16T14:58:58+0000

Answer:

a = 7.5

Explanation:

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

sin30° =
(1)/(2) , then

sin30° =
(opposite)/(hypotenuse) =
(a)/(15) =
(1)/(2) ( cross- multiply )

2a = 15 ( divide both sides by 2 )

a = 7.5