ANSWER

EXPLANATION
The given angle is 870°.
870°-360°-360°=150°
This means that:
870° is coterminal with 150°, hence its terminal side is in the second quadrant.
It makes an acute angle of 30° with the x-axis.
Note that cotangent is negative in the second quadrant,
Hence,

The first option is correct.
Answer:
100
Step-by-step explanation:

This can be turned into:
(if we add the numbers inside the brackets)
Following PEDMAS, this becomes:
which equals 
∴
Answer:
kdkdkdvjkccc
Step-by-step explanation: oh night longg
Hii I hope this helps! :)
Translation: It’s a transformation that moves every point in a figure the same distance in the same direction.
Rotation: It’s a a transformation that turns a figure about a fixed point.
Reflection: It’s a transformation that takes a shape/preimage and flips it across a line called the line of reflection to create a new shape/image.
It’s c. Where the two planes intersect