Answer:
b. cosine t less than 0 and cotangent t greater than 0
Step-by-step explanation:
We have the following relation

if we apply the cosine function in the relation we get:


the cosine of t is between 0 and -1 then (cosine t less than 0)
If we now apply cotangent function in the relation:


This means that cotang is greater than 0, therefore the correct answer is b. cosine t less than 0 and cotangent t greater than 0
Answer:

Step-by-step explanation:
The coordinates are:

The parallelogram is attached below.
To verify if these coordinates form a parallelogram, we show that:
Using Distance Formula




Since AB=CD; and AC=BD, the coordinates A, B, C, and D form the vertex of a parallelogram.
Answer:
in decimal form it is 8.25
Y = 0.8
4x + 8y = 40
4x + 8*(0.8) = 40
4x + 6.4 = 40
4x = 40 - 6.4
4x = 33.6
x = 8.4