Respuesta :

Answer:

other acute angle = 81°

Step-by-step explanation:

right angle has 90°.

here given one angle is 9°

total angle in a triangle is 180°

90° + 9° + x = 180°

x = 81°

Answer: 81°

Step-by-step explanation: A right triangle is always ninety degrees. Ninety minus eight equals eighty-one.