Use the graph to complete the identity.
-$\cos 3 x \cos \frac { 3 } { 2 } x + \sin 3 x \sin \frac { 3 } { 2 } x =$ ?

A) $y = \cos \frac { 3 } { 2 } x$
B) $y = \sin y = \cos \frac { 3 } { 2 } x$
C) $y = \cos y = \cos \frac { 9 } { 2 } x$
D) $y = \sin y = \cos \frac { 9 } { 2 } x$

Question

Use the graph to complete the identity.
-$\cos 3 x \cos \frac { 3 } { 2 } x + \sin 3 x \sin \frac { 3 } { 2 } x =$ ?

A) $y = \cos \frac { 3 } { 2 } x$ 
B) $y = \sin y = \cos \frac { 3 } { 2 } x$ 
C) $y = \cos y = \cos \frac { 9 } { 2 } x$ 
D) $y = \sin y = \cos \frac { 9 } { 2 } x$

Quizplus · Accepted Answer

The Answer of Use the graph to complete the identity.
-$\cos 3 x \cos \frac { 3 } { 2 } x + \sin 3 x \sin \frac { 3 } { 2 } x =$ ?

A) $y = \cos \frac { 3 } { 2 } x$ 
B) $y = \sin y = \cos \frac { 3 } { 2 } x$ 
C) $y = \cos y = \cos \frac { 9 } { 2 } x$ 
D) $y = \sin y = \cos \frac { 9 } { 2 } x$

Use the Graph to Complete the Identity cos⁡3xcos⁡32x+sin⁡3xsin⁡32x=\cos 3 x \cos \frac { 3 } { 2 } x + \sin 3 x \sin \frac { 3 } { 2 } x =cos3xcos23​x+sin3xsin23​x=

Use the Graph to Complete the Identity $\cos 3 x \cos \frac { 3 } { 2 } x + \sin 3 x \sin \frac { 3 } { 2 } x =$