Question

If tan theta = -5/7, cos theta <0, what is sin, cos, csc,and cot theta

Answer 1

tan inverse(-5/7)=-35.537
so angle is -35.537

Answer 2

h^2=root(49+25)=root(74)
=root(74)
sin(theta)=-5/(root 74)
cos(theta)=7/(root 74)

Answer 3

thank you

Answer 4

how does one solve this partial-fraction decomposition
: 3x^3-5x^2 +12 +4/ x^4 -16

Answer 5

partial-fraction decomposition is related to complex numbers process called residues
if you are familiar with it you should be okey

Answer 6

No am not familiar with residues

Answer 7

ok so
\[3x^3-5x^2+12x+4/(x^2-4)(x^2+4)\]
\[form: AX+B/(x^2-4) +CX+D/(x^2+4)\]
then multiplying through LHS with (x^2+4)(x^2-4)

Answer 8

equate the like terms and get value of A,B,C,D