Answer:
it was X =5
Step-by-step explanation:
Answer:
e) ![\pi/2](https://tex.z-dn.net/?f=%20%5Cpi%2F2%20)
f) ![3\pi/2](https://tex.z-dn.net/?f=%203%5Cpi%2F2%20)
g) ![0](https://tex.z-dn.net/?f=%200%20)
h) ![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
i) ![\pi/4](https://tex.z-dn.net/?f=%20%5Cpi%2F4%20)
j)
Step-by-step explanation:
We can solve this exercise by watching a basic trigonometric table
Here i will list values of sin and cos in the points
and ![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
Hence, the sin takes the value 1 on
, while it takes the value -1 in its opposite value - \pi/2 (because it is an odd function). If we use the periodicity of the sin, then sin(- \pi/2 + 2 \pi) = -1. Hence ![sin^{-1}(-1) = 3 \pi/2](https://tex.z-dn.net/?f=%20sin%5E%7B-1%7D%28-1%29%20%3D%203%20%5Cpi%2F2%20)
The cos takes value 1 in 0, and it takes the value -1 in ![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
The tangent is the quotient between sin and cos. The tangent is 1 when both cos and sin are equal. We can see that they are equal in
, where they take the value ![\sqrt2 / 2](https://tex.z-dn.net/?f=%20%5Csqrt2%20%2F%202%20)
The tangent is -1 where they are the opposite. This happens in
where they take the value
and
respectively.
Answer:
<h2>
B</h2>
Step-by-step explanation:
we can use the following equation to solve the problem and we can represent the cost per liter of paint with the variable x:
2.5x=60
(25/10)x=60/1
x=60/1/(25/10)
x=60/1*(10/25)
x=600/25
x=2400/100
x=24.00
x=24
The answer is B, 24$ per liter
R=4x/2x=2x/x=2
8x, 16x, 32x