Answer:
The most straightforward way to obtain the expression for cos(2x) is by using the "cosine of the sum" formula: cos(x + y) = cosx*cosy - sinx*siny. cos(2x) = cos² (x) - (1 - cos²(x)) = 2cos²(x) - 1. = 2cos²(x) - 1.
Step-by-step explanation:
Answer:
hello :)
no quite sure but I think it is:
50/100
<span>The spoke of a wheel reaches from the center of the wheel to its rim implies that the spoke of the wheel is describes the radius to the wheel. The circumference of a circle is given by C = 2πr. i.e. 48 = 2 x 3.14r = 6.28r => r = 48 / 6.28 = 7.64 inches.Hope this helps. Let me know if you need additional help!</span><span />
Answer:
None
Step-by-step explanation:
The
first graph.
The equation is x - 1

3
In order to solve it, you need to get x by itself.
Add 1 to both sides. 3+1=4
x

4
Since this is your sign

the arrow has to point towards the left, and the circle needs to be colored in.