When dividing with negative numbers, will the quotient be negative or positive

(the question above is an example of what i'm talking about.)

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

The system of equations graphed below has how many solutions?