Solve the Problem $y = \cos x , 0 \leq x \leq 2 \pi$

question 338

Multiple Choice

Solve the problem.
-Find all points on the curve $y = \cos x , 0 \leq x \leq 2 \pi$ , where the tangent line is parallel to the line $y = - x$ .

• A) \(\left( \frac { \pi } { 2 } , 0 \right)\)
• B) \(\left( \frac { 3 \pi } { 2 } , 0 \right)\)
• C) \(( 2 \pi , 1 )\)
• D) \(( \pi , - 1 )\)

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