Answer:
110 squares
Step-by-step explanation:
= 10 x 11
= 110 small squares.
From the question,
Step one : • • = 1(2) small squares
Step two : • • • = 3 squares in two layers = 2(3) = 6 small squares
• • •
Step three : • • • • = 4 squares in 3 layers = 3(4) = 12 small squares
• • • •
• • • •
We know that : Sin²θ + Cos²θ = 1
Given : Sinθ ![\bf{= \frac{4}{7}}](https://tex.z-dn.net/?f=%5Cbf%7B%3D%20%5Cfrac%7B4%7D%7B7%7D%7D)
![\bf{\implies (\frac{4}{7})^2 + Cos^2(\theta) = 1}](https://tex.z-dn.net/?f=%5Cbf%7B%5Cimplies%20%28%5Cfrac%7B4%7D%7B7%7D%29%5E2%20%2B%20Cos%5E2%28%5Ctheta%29%20%3D%201%7D)
![\bf{\implies Cos^2(\theta) = 1 - \frac{16}{49}}](https://tex.z-dn.net/?f=%5Cbf%7B%5Cimplies%20Cos%5E2%28%5Ctheta%29%20%3D%201%20-%20%5Cfrac%7B16%7D%7B49%7D%7D)
![\bf{\implies Cos^2(\theta) =(\frac{49 - 16}{49})}](https://tex.z-dn.net/?f=%5Cbf%7B%5Cimplies%20Cos%5E2%28%5Ctheta%29%20%3D%28%5Cfrac%7B49%20-%2016%7D%7B49%7D%29%7D)
![\bf{\implies Cos^2(\theta) =(\frac{33}{49})}](https://tex.z-dn.net/?f=%5Cbf%7B%5Cimplies%20Cos%5E2%28%5Ctheta%29%20%3D%28%5Cfrac%7B33%7D%7B49%7D%29%7D)
![\bf{\implies Cos(\theta) = (\pm)(\frac{\sqrt{33}}{7})}](https://tex.z-dn.net/?f=%5Cbf%7B%5Cimplies%20Cos%28%5Ctheta%29%20%3D%20%28%5Cpm%29%28%5Cfrac%7B%5Csqrt%7B33%7D%7D%7B7%7D%29%7D)
Given : θ lies in Quadrant II
We know that : Cosθ is Negative in Quadrant II
![\bf{\implies Cos(\theta) = (-)(\frac{\sqrt{33}}{7})}](https://tex.z-dn.net/?f=%5Cbf%7B%5Cimplies%20Cos%28%5Ctheta%29%20%3D%20%28-%29%28%5Cfrac%7B%5Csqrt%7B33%7D%7D%7B7%7D%29%7D)
Option 3 is the Answer
Answer: 48hm
Step-by-step explanation:
48hm = 4800m
480m < 4800m
Answer: 2 boxes
Step-by-step explanation:
A=Box A. a=A-65. B=Box B. b=B+65
A=100+20+5
A=125
A-65=125-65
a=60
B=50+10+10+10
B=80
B+65=80+65
b=145
b=A+20
a=B-20
b=100+20+5+10+10 ==> Change in +2 boxes
a=50+10 ==> Change in -2 boxes