If sin 0º = 0, then csc 0°=
(check image)

Step-by-step explanation:

sin(0) = 0/2

sin(30) = 1/2

sin(45) = /2

sin(60) = /2

sin(90) = /2

cos(90) = 0/2

cos(60) = 1/2

cos(45) = /2

cos(30) = /2

cos(0) = /2

notice that sin and cos repeat,   but in reverse

the answer for your questions is in there.  

answer: b. f(x) = (x + 2)^3 (x^2 - 7x + 3)^4

step-by-step explanation:

polynomials always have as many roots as their order. this is a 4th order polynomial- hence 4 roots!

complex roots of polynomials always come in pairs. the quadratic equation has the "+/-" in that will alwaysgenerate m+ni amd m-ni, so 7-2i must be a root of this polynomial equation.

the order of the numerator and denominator are both 2. so the horizontal asymptote is y=a2/b2 =7

verticle asymptotes are the forbidden x-values. f(x) becomes undefined at x=-3 because this value will cause a zero denominator.

a graph of r(x) will have vertical asymptotes at ±1 because these values will make the denominator zero. so the domain of the function cannot include ±1.

you 're wlecome! : )

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