The cotangent function is defined as the ratio between cosine and sine of a given angle, i.e.

Since you can't have zero at the denominator, the cotangent function is not defined when the sine is zero.
Let's look at your option:
, so the cotangent is defined here
, so the cotangent is not defined here
, so the cotangent is defined here
, so the cotangent is defined here
Answer:
7
Step-by-step explanation:

I hope it helped you
Answer:
60
Step-by-step explanation:
4/3 = x/45
45/3=15
15*4=60
x=60
Answer:
(0, 2)
Step-by-step explanation:
add 5 to -5 and -3
Answer:
B. y= 1/2 x - 3
Step-by-step explanation:
base equation: y= mx+ b
slope(m) equation:
y2= -1 y1= -3
x2= 4 x1= 0

y- intercept: -3
found by taking the y from (0,-3)