Answer: A - sin 63
Step-by-step explanation:
Answer: A
Step-by-step explanation:
Answer:

Step-by-step explanation:
It is given that triangle AOC intersects a circle with center O, side AO is 10 inches and the diameter of the circle is 12 inches, thus
OC is the radius of the circle and is equal to
.
Now, From ΔAOC, using the Pythagoras theorem, we get

⇒
⇒
⇒
⇒
Of means multiply.
30%=0.3
30*0.3=9
9 students play in the school band