Math SOL Testing Review Qu
Which set include I only ordered pairs that are located in the second quadrant of a coordinate plane?
O {(3, 4), (8, 6), (1, -1)}
O {(3, 4), (8, 6), (1, 1)}
O {(-3, 4), (-8,6), (-1, 1)}
O {(-3, 4), (-8, 6), (-1, 1)}

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

look at the picture i have filled out a table for it. hope this .