Respuesta :

Answer:

²¹/₂₉

Step-by-step explanation:

The sine of an angle is defined by: the length of the side opposite the angle ÷ the length of the hypotenuse. (SOH CAH TOA)

The length of the side opposite ∠B is 21 units, and the length of the hypotenuse is 29 units.

So, the ratio will be ²¹/₂₉.