Answer:
M. x(n)
Step-by-step explanation:
Because it is one of the few not used
Answer:
132 square cm = 20.46 square inches
Step-by-step explanation:
Total surface area = area of base (square) + 4 x area of one triangle.
1 3/7 because 7+3 is equal to 10. also 20/14 is an improper fraction yet still acceptable
<span>I am assuming you want to prove:
csc(x)/[1 - cos(x)] = [1 + cos(x)]/sin^3(x).
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).
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.
I hope this helps!</span>