The area of the pentagon is 5(1/2*9*13) = 5(58.5) = 292.5 square units.
There are 2 pentagons, so the area of the two are: 292.5 x 2 = 585 square units.
The area of the rectangle is 20 * 13 = 260 square units.
Total area = 260 + 585 = 845 square units.
The answer is D.
The solution is the x-value of the point of intersection.
x ≈ 1 ,1 3
Answer:
66
Step-by-step explanation:
Angle 2 and 4 are supplementary, so if angle 4 is 123, then 180-123=57.
So angle 2 is 57.
Then, if angle 2 and 3 are 57 and we know that all angles of a triangle have to add up to 180, then:
57+57+angle 1=180
114+ angle 1=180
angle 1= 66
Answer:
The answer to your question is below
Step-by-step explanation:
csc α - cot α = 
Work with the left part

Simplify

Multiply by the reciprocal
Simplify

Remember that
sin²α = 1 -cos²α
Substitute the previous equation

Simplify
The identity i proved.