Use the graph to complete the identity.
-$\cos ^ { 2 } x + \cos x - 1 + \sin ^ { 2 } x ; \cos x$
A) $\cos x$
B) $- \cos x$
C) $2 + \cos x$
D) $2 \cos x$

Name: Use the graph to complete the identity. -$\cos ^ { 2 } x + \cos x - 1 + \sin ^ { 2 } x ; \cos x$ A) $\cos x$ B) $- \cos x$ C) $2 + \cos x$ D) $2 \cos x$
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Question

Quizplus · Accepted Answer

Using the Pythagorean identity $\sin^2x + \cos^2x = 1$, the expression simplifies to $\cos x$.

Use the Graph to Complete the Identity cos⁡2x+cos⁡x−1+sin⁡2x;cos⁡x\cos ^ { 2 } x + \cos x - 1 + \sin ^ { 2 } x ; \cos xcos2x+cosx−1+sin2x;cosx

Use the Graph to Complete the Identity $\cos ^ { 2 } x + \cos x - 1 + \sin ^ { 2 } x ; \cos x$