Answer:

Step-by-step explanation:
We are given that:

Recall that cosine is the ratio of the adjacent side to the hypotenuse. Using the Pythagorean Theorem, solve for the opposite side (we can ignore the negative for now):

And since θ is in QII, sine is positive, and cosine and tangent are both negative.
Sine is the ratio of the opposite side to the hypotenuse. Therefore:

Not sure what the question is asking, but what you listed is true. Percentage is out of 100 and the denominator would always be 100.
Total surface area equals area of 5 rectangular faces + 2 pentagonal faces
Area of 5 rectangular faces


Area of 2 pentagonal faces can be found by drawing 5 isosceles triangles with height as shown in the diagram and multiply the result by 2.


The toatal surface area is

The correct answer is A
Answer:
( - infinity, -3 ] [ -2, infinity )
square bracket means it includes the end point.
Step-by-step explanation:
(-∞, -3]U [-2,∞)
The answer to 82.2% of 50 is 41.1