Consider angle θ in Quadrant ll, where cos θ= -12/13. what's the value of sin θ

sinθ = 5/13

Step-by-step explanation:

cosθ = adjacent/hypotenuse (or you could think of it as x/r)

cosθ = -12/13

adjacent = -12

hypotenuse = 13

opposite = ?

To get the opposite, we use the Pythagorean theorem

Now sub in the numbers:

opposite = 5

Now sinθ = opposite/hypotenuse

so sinθ = 5/13

3x^3-x^2+6x-9