Answer:


Step-by-step explanation:
Calculate the value of trigonometry function.
and 
Split the angle between 0 to 90° using trigonometry formula.



Therefore, cos(480°) = -0.5



Therefore, sin(480°) = 0.866
Slope is (y2-y1)/(x2-x1)
(2-2)/(1-1)
slope is 0 which means it is a horizontal line.
Answer:
(3,11)
Step-by-step explanation:
Turn both equations into linear equations:
y=2x+5
y=5x-4
Then, just graph both equations.
Find the point where the two lines intersect. That point of intersection is the solution. That coordinate is (3,11).
Answer:
4a+4b
Step-by-step explanation:
A)2.8
b1) 4.5/2.8
b2)impossible because if you want to do trigonometry you can't have that is an angle (Which is 148.1) larger than 90 degrees.
but if its angle BAF then the angle would be 2.8/5.3
c)41.32