Sometimes that angle = 0 degrees and you have a solar eclipse ---the moon is in new phase and it is covering up the Sun.
(you; have; a solar eclipse ---the moon is in new phase and it is covering up the Sun) (the moon; is; in new phase) (it; is covering up; the Sun)
you the moon it
have is is covering up
a solar eclipse ---the moon is in new phase and it is covering up the Sun
in new phase
the Sun