Answer:
x = 16
Step-by-step explanation:
cos theta = adjacent side / hypotenuse
cos 60 = 8/x
Multiply by x on each side
x cos 60 =8/x*x
x cos 60 = 8
Divide by cos 60 on each side
x cos 60/cos 60 = 8 /cos 60
x =8 /cos 60
x = 16
Answer:
+ + 7 = 23 but if you meant negative square roots then, + + 7 = 7+16i
Step-by-step explanation:
Rather than solve the entire problem for you, I'll give you some hints to help you get started:
1. The amplitude of your sinusoidal graph is |3|, or just 3.
2. Because of that, your graph begins at the point (0,3).
3. Because this is the cosine function, your graph descends from (0,3) to y=3 and then begins to ascend (back to y=3).
4. The coefficient of x is "one half pi," or pi/2. Call this "b".
5. The period of your function is 2pi/b. Here, b=pi/2.
Dividing, [2pi]/[pi/2] = 4.
6. Mark your horizontal axis as follows: x=0, 4, 8, 12, 16, ...
7 Draw one cycle of the cosine function with amplitude 3. It must begin at (0,3) and end at (4,3) (which covers one period).
8. Draw another cycle or two, beginning at (4,3) and ending at (8,3), and so on.
Step-by-step explanation:
Area = 2(lb+bh+hl)
= 2(96+18+48)
= 2(162)
= 324m²
Answer:
10
Step-by-step explanation:
The radius is half of the diameter, so 5 * 2 = 10