Solve the problem.
-If $f ( \theta ) = \cos \theta$ and $f ( a ) = - \frac { 1 } { 12 }$, find the exact value of $f ( a ) + f ( a - 2 \pi ) + f ( a + 4 \pi )$
A) $- 36$
B) $- 12$
C) $- \frac { 1 } { 12 }$
D) $- \frac { 1 } { 4 }$

Question

Quizplus · Accepted Answer

The Answer of Solve the problem.
-If $f ( \theta ) = \cos \theta$ and $f ( a ) = - \frac { 1 } { 12 }$, find the exact value of $f ( a ) + f ( a - 2 \pi ) + f ( a + 4 \pi )$
A) $- 36$
B) $- 12$
C) $- \frac { 1 } { 12 }$
D) $- \frac { 1 } { 4 }$

Solve the Problem f(θ)=cos⁡θf ( \theta ) = \cos \thetaf(θ)=cosθ And f(a)=−112f ( a ) = - \frac { 1 } { 12 }f(a)=−121​

Solve the Problem $f ( \theta ) = \cos \theta$ And $f ( a ) = - \frac { 1 } { 12 }$