simply this expression csc (theta)- cos (theta) cot (theta)
find two real and imaginary zeros for this function: f(x)= x^4+x^3-2x^2+4x-24
convert these polar equations to rectangular form:
r=3csc (theta) r=6sin (theta)
simplify this expression: cos[sin^-1(square root of 3/2)]
