Answer:
See below
Step-by-step explanation:
For a right triangle, there are relationships between the sides and the angles of the triangle:



I would study the attached image for a better understanding.
Answer:
D
Step-by-step explanation:
To get the answer, multiple 20 by 0.45= $9 than subtract 9$ from $10 which equals $1.
Answer:
x = 12
Step-by-step explanation:
By applying geometric root theorem in the given triangle,





Therefore, x = 12 will be the answer.