Answer:
d
Step-by-step explanation:
Length is 2 and width is 3
2 X 3 is 6
First let's find the angles a and b.
We have then:
sin a = 4/5
a = Asin (4/5)
a = 53.13 degrees.
cos b = 5/13
b = Acos5 / 13
b = 67.38 degrees.
We now calculate cos (a + b). To do this, we replace the previously found values:
cos ((53.13) + (67.38)) = - 0.507688738
Answer:
-0.507688738
Note: there is another way to solve the problem using trigonometric identities.
![\tt\underline{❖ Given\: that ❖ : - }](https://tex.z-dn.net/?f=%20%20%5Ctt%5Cunderline%7B%E2%9D%96%20Given%5C%3A%20that%20%E2%9D%96%20%20%3A%20-%20%7D)
- A a width =32 ft
- length =100 ft.
- If one bag of grass seed covers 125
![\tt{❖Solution❖ : - }](https://tex.z-dn.net/?f=%20%5Ctt%7B%E2%9D%96Solution%E2%9D%96%20%20%3A%20-%20%7D)
![➲ \sf \: A = b \times h](https://tex.z-dn.net/?f=%E2%9E%B2%20%5Csf%20%5C%3A%20A%20%3D%20b%20%20%5Ctimes%20%20h)
![➲ \sf A = 100 \times 32](https://tex.z-dn.net/?f=%E2%9E%B2%20%5Csf%20%20A%20%3D%20100%20%20%5Ctimes%20%2032)
![➲ \sf \: A = 3200 \: sq. feet](https://tex.z-dn.net/?f=%20%E2%9E%B2%20%5Csf%20%5C%3A%20A%20%3D%203200%20%20%5C%3A%20sq.%20feet)
A/Q
If one bag of grass seed covers 125
the last number of bags needed to seed the backyard
![➲ \sf\dfrac{3200}{ 125} = 25.6](https://tex.z-dn.net/?f=%E2%9E%B2%20%20%5Csf%5Cdfrac%7B3200%7D%7B%20125%7D%20%3D%2025.6)
You'll need 27 bags of seed.
Answer:
91 divided by 14 = 6.5 is the length
Step-by-step explanation:
Whenever given an area and 1 given length always divide the area by the length to find the missing length.