Question

1.

find a
a =
21°
explain why using one of these
words: adjacent,
complementary, supplementary,
vertical
explanation goes here
add a pic of your work
(or just type it here)
to show HOW you got your
answer
pic (or typing) goes Hereford

Answer 1

`21+a=90 \implies a=69^(\circ)`

This is because the angles are complementary.