Find the Exact Value cos(-3/4)

Problem

cos(−3/4)

Solution

1. Identify the property of the cosine function. The cosine function is an even function, which means cos(−θ)=cos(θ) for any value of θ

2. Apply the even function property to the given expression.

cos(−3/4)=cos(3/4)

3. Determine if the value can be simplified further. Since 3/4 is in radians and is not a standard multiple of π (like π/4 or π/6, the exact value is expressed as the function itself.

Final Answer

cos(−3/4)=cos(3/4)

Want more problems? Check here!