Answer:
C) Sin 2theta = root3/2, cos 2theta = 1/2
Step-by-step explanation:
If theta is between 0 degrees and 90 degrees, that means it's in the 1st quadrant.
If you look at a labeled unit circle, the only value where sin (y-value) of theta is at pi/6 radians. That means, theta equals pi/6. So 2theta is just pi/6 * 2 which is pi/3. Sin (pi/3) is equal to root3/2.
We know 2theta is pi/3, so the cos (x-value) of 2theta on a labeled unit circle is 1/2, which means cos 2theta is 1/2.
Answer:
x = 4
Step-by-step explanation:
All the sides on a regular pentagon are equal to each other.
Scientific define mass
In physical science, mass is a measure of the number of atoms in an object combined with the density of those atoms. The mass of an object determines how that object responds to forces such as gravity and friction. The typical unit of measure for mass is kilograms.
Answer:
false
Step-by-step explanation:
Answer:
The vertex: 
The vertical intercept is: 
The coordinates of the two intercepts of the parabola are 
and 
Step-by-step explanation:
To find the vertex of the parabola 
you need to:
1. Find the coefficients <em>a</em>, <em>b</em>, and <em>c </em>of the parabola equation
<em>
</em>
2. You can apply this formula to find x-coordinate of the vertex
, so
3. To find the y-coordinate of the vertex you use the parabola equation and x-coordinate of the vertex (
)
To find the vertical intercept you need to evaluate x = 0 into the parabola equation
To find the coordinates of the two intercepts of the parabola you need to solve the parabola by completing the square
