Answer:
circumference is 21.99
area is 38.48
Step-by-step explanation:
Answer:
probably the 8 ounce one
Step-by-step explanation:
Answer:
The answer is 132
Step-by-step explanation:
First, find the area wholely, 20x8 = 160. Then find the triangle which is 7x 8 divided by 2 is 28 and you subtract the whole are by the triangle which is 160 - 28 is 132
Answer:
if im right i think its A
Step-by-step explanation:
.
Given:
An angle θ on the unit circle has a sine of
.
To find:
The value of cosθ.
Solution:
We have,
![\sin \theta=\dfrac{1}{4}](https://tex.z-dn.net/?f=%5Csin%20%5Ctheta%3D%5Cdfrac%7B1%7D%7B4%7D)
Since sinθ is positive, therefore, θ lies in first or second quadrant.
We know that,
![\sin^2 \theta +\cos^2 \theta =1](https://tex.z-dn.net/?f=%5Csin%5E2%20%5Ctheta%20%2B%5Ccos%5E2%20%5Ctheta%20%3D1)
![(\dfrac{1}{4})^2+\cos^2 \theta =1](https://tex.z-dn.net/?f=%28%5Cdfrac%7B1%7D%7B4%7D%29%5E2%2B%5Ccos%5E2%20%5Ctheta%20%3D1)
![\dfrac{1}{16}+\cos^2 \theta =1](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B16%7D%2B%5Ccos%5E2%20%5Ctheta%20%3D1)
![\cos^2 \theta =1-\dfrac{1}{16}](https://tex.z-dn.net/?f=%5Ccos%5E2%20%5Ctheta%20%3D1-%5Cdfrac%7B1%7D%7B16%7D)
Taking square root on both sides.
![\cos \theta =\pm \sqrt{\dfrac{16-1}{16}}](https://tex.z-dn.net/?f=%5Ccos%20%5Ctheta%20%3D%5Cpm%20%5Csqrt%7B%5Cdfrac%7B16-1%7D%7B16%7D%7D)
![\cos \theta =\pm \dfrac{\sqrt{15}}{4}](https://tex.z-dn.net/?f=%5Ccos%20%5Ctheta%20%3D%5Cpm%20%5Cdfrac%7B%5Csqrt%7B15%7D%7D%7B4%7D)
Therefore, the value of cosθ is either
or
.