Find any points on the hyperboloid x2 − y2 − z2 = 8 where the tangent plane is parallel to the plane z = 7x + 7y. (If an answer does not exist, enter DNE.)

A. -10 is the value of x

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .