1.
Use the sum or difference identity for sine to find the exact value
of sin 375°.
A.
B.
C.
D.
Hint
2.
Find the value of sin (
x
+
y
) if
, sin
x
=
, and
sin
y
=
.
A.
B.
C.
D.
Hint
3.
Complete the identity
______________.
A.
-cos
A
B.
-sin
A
C.
sin
A
D.
cos
A
Hint
4.
Use the sum or difference identity for tangent to find the exact value of tan 165°.
A.
-
B.
1
C.
D.
- 2
Hint
5.
Complete the identity tan (
-
A
) = ________.
A.
-cot
A
B.
cot
A
C.
-tan
A
D.
tan
A
Hint