Answer:
24 feet 9 inches
Step-by-step explanation:
14 ft + 9 ft = 23 ft
10 in + 11 in = 21 in - 1 ft = 9 in
23 feet + 1 ft + 9 in = 24 feet and 9 inches
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Answer:
really good
Step-by-step explanation:
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Answer:
88 square units
Step-by-step explanation:
Given:
cos 120°
To find:
The exact value of cos 120° in simplest form with a rational denominator.
Solution:
We have,

It can be written as

![[\because \cos (90^\circ-\theta)=-\sin \theta]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Ccos%20%2890%5E%5Ccirc-%5Ctheta%29%3D-%5Csin%20%5Ctheta%5D)
![[\because \sin 30^\circ=\dfrac{1}{2}]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Csin%2030%5E%5Ccirc%3D%5Cdfrac%7B1%7D%7B2%7D%5D)

Therefore, the exact value of cos 120° is
.