# Question: double angle identities in excercises 112 use the double angle...

###### Question details

DOUBLE ANGLE IDENTITIES:

In excercises 1-12, use the double angle identities to find
the indicated values.

#1, 5, 9

Please explain steps.

In excercises 1-12, use the double angle identities to find
the indicated values.

#1, 5, 9

Please explain steps.