Find the specified quantity.
-Find the period of $y = - 4 \cos \left( 5 x + \frac { \pi } { 2 } \right)$.
A) $\frac { 2 \pi } { 5 }$
B) 4
C) $\pi$
D) $\frac { \pi } { 2 }$

Name: Find the specified quantity. -Find the period of $y = - 4 \cos \left( 5 x + \frac { \pi } { 2 } \right)$. A) $\frac { 2 \pi } { 5 }$ B) 4 C) $\pi$ D) $\frac { \pi } { 2 }$
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Question

Quizplus · Accepted Answer

The period of a cosine function of the form $y = a \cos(bx + c)$ is given by $\frac{2\pi}{|b|}$. Here, $b = 5$, so the period is $\frac{2\pi}{5}$.

Find the Specified Quantity y=−4cos⁡(5x+π2)y = - 4 \cos \left( 5 x + \frac { \pi } { 2 } \right)y=−4cos(5x+2π​)

Find the Specified Quantity $y = - 4 \cos \left( 5 x + \frac { \pi } { 2 } \right)$