Use the Cofunction Identities to Find an Angle That Makes $\theta = 40 ^ { \circ }$

Multiple Choice

Use the cofunction identities to find an angle that makes the statement true.
-sin (ϴ + 4°) = cos (ϴ + 6°) A

A) $\theta = 40 ^ { \circ }$
B) $\theta = \frac { 17 ^ { \circ } } { 7 }$
C) $\theta = \frac { 83 ^ { \circ } } { 7 }$
D) $\theta = 10 ^ { \circ }$