Simplify cos(-pi/2)

Problem

cos(−π/2)

Solution

1. Identify the property of the cosine function for negative angles.

cos(−θ)=cos(θ)

2. Apply the property to the given expression.

cos(−π/2)=cos(π/2)

3. Evaluate the cosine of π/2 using the unit circle or trigonometric values.

cos(π/2)=0

Final Answer

cos(−π/2)=0

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