Rita is proving that the following trigonometric identity is true: cos(−θ)sin(−θ)=−1tanθ

Which step would be the first line of her proof?

cosθsinθ=−1tanθ
cosθ−sinθ=−1tanθ
cos(−θ)sinθ=−1tanθ
cos(−θ)⋅tanθ=sin(−θ)

PLEASE ANSWER WILL MARK BRAINLIEST

it is true

step-by-step explanation:

all the combinations add up i used   calculator

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

step-by-step explanation:

; fx

many reason,

step-by-step explanation: