Answer:
I50
Step-by-step explanation:
S you see it has to be a 4th because of the 957 factor
Answer:
106.6
Step-by-step explanation:
There is a triangle and rectangles inside of this shape. You need to split it up so you can find all the sides of the triangle and the squares. The attached image shows me doing that.
Now you need to calculate the area for all the rectangles and triangles.
The area of a triangle is A = bh / 2
The area of a rectangle is A = lw
The area of a square is A = s^2 or s * s.
Add up the area of all geometry together to get your answer.
10.2 is the area of the triangle
17.6 is the area of 4.4 by 4 rectangle
36.5 is the area of the 8.3 by 4.4 rectangle
42.3 is the area of the 8.3 by 5.1 rectangle.
The total area of the figure shown is ≈ 106.6
Answer:
Step-by-step explanation:
Use the half angle identity for cosine:
cos(x/2)=+ or - sqrt(1+cos(x))/sqrt(2)
I'm going to figure out the sign part first for cos(x/2)...
so x is in third quadrant which puts x between 180 and 270
if we half x, x/2 this puts us between 90 and 135 (that's the second quadrant)
cosine is negative in the second quadrant
so we know that
cos(x/2)=-sqrt(1+cos(x))/sqrt(2)
Now we need cos(x)... since we are in the third quadrant cos(x) is negative...
If you draw a reference triangle sin(x)=3/5 you should see that cos(x)=4/5 ... but again cos(x)=-4/5 since we are in the third quadrant.
So let's plug it in:
cos(x/2)=-sqrt(1+4/5)/sqrt(2)
No one likes compound fractions (mini-fractions inside bigger fractions)
Multiply top and bottom inside the square roots by 5.
cos(x/2)=-sqrt(5+4)/sqrt(10)
cos(x/2)=-sqrt(9)/sqrt(10)
cos(x/2)=-3/sqrt(10)
Rationalize the denominator
cos(x/2)=-3sqrt(10)/10
Answer:
A. acute, scalene
Step-by-step explanation:
The angles are less than 90 degrees. Therefore, the triangle is acute. The sides are uneven. Therefore, the figure shown is a scalene triangle.
