Question $9$

When establishing a trigonometric identity, we must start with one side $($usually the more

complicated side$)$ and show through a chain of equalities that it equals the other side.

True

False

Question $10$

When establishing a trig identity that cannot be finished in one line, we should structure the chain of

equalities as follows:

$=,=$

$=,=$

$=.,=$

True

False