<span>You are not supposed to be wallpapering the ceiling or the floor. Because of that the formula to answering this question is: 2(h*w) + 2(l*w) [to account for the 4 walls being wallpapered]
2(9 x 18) + 2(9 x 20)
2(162) + 2(180)
324 + 360
684 is the answer
</span>
Answer:
54/5
Step-by-step explanation:
(3/5)(18)=54/5
Answer:
I would say ther ansewrr for this is going to most likely be c
Step-by-step explanation:
Sin and cos functions can never be equal to 5. They can never be greater than 1! Both!
You can think of sin and cos functions as projections (that is how i do). Imagine xy coordinate system. Draw a circle which center (center of circle) is in center of xy coordinate system. Let radius of that circle be one (you can take one to be any length you want).
Now, x - axis and any radius of that circle make an angle.
NOW HERE IS IMPORTANT PART:
-projection of that radius on x-axis is cosine of the angle that radius and x-axis make.
-projection of that radius on y-axis is sinus of the angle that radius and x-axis make.
From that you can see that projections cannot ever be greater than 1.