Answer:
m∠I = 58.4°
Step-by-step explanation:
cos = adjacent side/hypotenuse
It is always helpful to have a picture. In your case KI is adjacent to ∠I and IJ is the hypotenuse.
So cos I = KI/IJ = 4.5/8.6
arccos (4.5/8.6) = m∠I
m∠I = 58.4°
It is necessary for you to memorize the definitions of the trig functions in order to do these types of problems. OK?
Answer:
12 mouthpieces, 24 reeds, 6 neck straps
Step-by-step explanation:
42 objects - 12 mouthpieces
= 30 objects left consisting of reeds and neckstraps
4 times as many reeds as neckstraps
think of it as 5 groups, 4 are reeds and 1 of nexkstraps
so divide 30 by 5 to get 6 per part.
4 of those parts = 24
1 of the parts = 6
so reeds = 24
neckstraps is 6
mouthpieces = 12
Answer:
72.22
Step-by-step explanation:
C =
3.14×23=72.22