Question

Y=-9x in QII find sin and tan

Answer 1

Explanation:

QII means that we take a point in the second quadrant.

We have that y = -9x, so if x = -1, y = -9*(-1) = 9. So we have the point (-1,9).

From this point, we can draw the following right triangle:

First we find the hypothenuse:

h² = 9² + 1²

h² = 82

h = sqrt(82).

Tangent:

Sine: