<span> I am assuming you want to prove:
csc(x)/[1 - cos(x)] = [1 + cos(x)]/sin^3(x).
</span>
<span>If we multiply the LHS by [1 + cos(x)]/[1 + cos(x)], we get:
LHS = csc(x)/[1 - cos(x)]
= {csc(x)[1 + cos(x)]/{[1 + cos(x)][1 - cos(x)]}
= {csc(x)[1 + cos(x)]}/[1 - cos^2(x)], via difference of squares
= {csc(x)[1 + cos(x)]}/sin^2(x), since sin^2(x) = 1 - cos^2(x).
</span>
<span>Then, since csc(x) = 1/sin(x):
LHS = {csc(x)[1 + cos(x)]}/sin^2(x)
= {[1 + cos(x)]/sin(x)}/sin^2(x)
= [1 + cos(x)]/sin^3(x)
= RHS.
</span>
<span>I hope this helps! </span>
Answer:
13
Step-by-step explanation:
is slope-intercept form, which is a way of writing an equation for a line.
In this equation, 
represents the slope and 
represents the y-intercept.
and 
are the coordinates of a point on the resulting line.
Here are some examples:
Answer:
Your answer would be G, since point G is opposite of point B, and is a ray.
Step-by-step explanation:
Answer:m<2= 160 degrees m<3=20 degrees
Step-by-step explanation:the angles have to equal 360 in all and the side lengths are all the same
