<h3>
Hello there today we will solve your problem</h3>
here is our equation,
,
Now we will plug in our numbers
__________________


__________________

simplify it and we get



The surface area is 253.5 but Im not sure
Answer:
4 and 2
Step-by-step explanation:
4x4+2x2
16+4=20
<u>ANSWER TO PART A</u>
The given triangle has vertices 
The mapping for rotation through
counterclockwise has the mapping

Therefore



We plot all this point and connect them with straight lines.
ANSWER TO PART B
For a reflection across the y-axis we negate the x coordinates.
The mapping is

Therefore



We plot all this point and connect them with straight lines.
See graph in attachment
Answer: -1
Step-by-step explanation:
First change tan(315) to:

Then evaluate the sine and cosine function. What is the y component of 315 degrees? What is the x component of 315 degrees?
