Simplify the Following Expression Algebraically $7 \cos ( \pi + x )$

question 25

Multiple Choice

Simplify the following expression algebraically.​ $7 \cos ( \pi + x )$ ​

• A) \(- 7 \sin x\)
• B) \(- 7 \cos x\)
• C) \(7 \cos x\)
• D) \(\frac { 3 } { 2 } \cos x\)
• E) \(- \frac { 3 } { 2 } \cos x\)

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