Which expression is equivalent to cos 120°?
1 answer:
Answer:
cos 120° = -1/2
Step-by-step explanation:
cos 120° = (adjacent side) / (hypotenuse.
Here the adjacent side (the side next to the central angle in this 30-60-90 triangle) is -1. Then the hypotenuse is 2 and the opposite side is √3.
Thus, cos 120° = -1/2
You might be interested in
Answer:
ok the answer is C
Step-by-step explanation:
1.75*4=7
.75*2=1.5
7+1.5=8.50
Answer:
The answer is x = 0
5. =14
6. =17
hope this helps :)
Answer:
9600
Step-by-step explanation:
y varies inversely with the square of x
y=k/(x^2)
for some non-zero constant k
y=6 when x=4
6=k/(4^2)
k=96
y=96/(x^2)
x=0.1
y=96/(0.1^2)
y=9600
Answer:
It’s d
Step-by-step explanation:
