4) Area is 48 I believe because 6x8 is 48
8) Same explanation but 4x8 making the area 32.
2) Area: 1 because 1x1 is 1
3) Area: 36 because 4.5x8 is 36
The value of 
for the angles 
and 
in standard position in the first quadrant is 
We need to find the value of . To proceed, we need to use the compound angle formula
<h3>
Cosine of a sum of two angles</h3>
The cosine of the sum of two angles and is given below
We are given
We need to find 
and 
, using the identity
<h3>Find sin(b)</h3>
To find , note that
substituting 
for 
in the identity, we get
<h3>Find cos(a)</h3>
To find , note that
substituting 
for 
in the identity, we get
<h3>Find the value of cos(a+b)</h3>
We can now make use of the formula
to find .
Learn more about sine and cosine of compound angles here brainly.com/question/24305408
0.04166666666666 repeating hope this helps
the closest fraction to pi is 22/7 about 3.142857 while pi is 3.1415926
Area of the red paper = 90 in²
Area of the blue paper = 12 x 9 = 108 in²
108 - 90 = 18 in²
Ans: The blue paper is larger by 18 in².
