Find the specified quantity.
-Find the amplitude of $y = - 5 \cos \left( 2 x + \frac { \pi } { 4 } \right)$.
A) 2
B) $- 10$
C) 5
D) $\frac { \pi } { 2 }$

Name: Find the specified quantity. -Find the amplitude of $y = - 5 \cos \left( 2 x + \frac { \pi } { 4 } \right)$. A) 2 B) $- 10$ C) 5 D) $\frac { \pi } { 2 }$
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Question

Quizplus · Accepted Answer

The amplitude of a trigonometric function like $y = A \cos(Bx + C)$ or $y = A \sin(Bx + C)$ is given by the absolute value of $A$. In this case, $A = -5$, so the amplitude is $|-5| = 5$.

Find the Specified Quantity y=−5cos⁡(2x+π4)y = - 5 \cos \left( 2 x + \frac { \pi } { 4 } \right)y=−5cos(2x+4π​)

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