Which angle (A, B, or C) is the diffraction angle?

Describe the path of a ray that approaches a mirror parallel to the principal axis.

Aballet student who learns with the of his instructor is demonstrating learning.

Find the equation for the plane through upper p 0 left parenthesis negative 4 comma negative 8 comma negative 5 right parenthesis perpendicular to the following line. xequalsnegative 4 minus t, yequalsnegative 8 plus 2 t, zequals3 t, minusinfinityless thantless thaninfinity