Answer:
You can user the application name Geogebra
Step-by-step explanation:
You can draw the graph of tangents and trigonometry
The initial term of this geometric series is 4, and the common ratio is -1/2. The sum is given by

The sum is
approximately 2.66.
Answer:
For any value of x
Step-by-step explanation:
Solve by using system of equations!
3x+12
3(x+4)=3x+12
3x+12=3x+12
x=x
This means that any value of x would create the same answer for both equations.
Answer:
im pretty sure its 4! if not 6!
Answer:

Step-by-step explanation:
we know that
The measure of central angle ABC is
radians
so

subtends the complete circle
The area of the shaded sector is the area of a quarter circle
so
The area of a quarter circle is equal to

we have

substitute
