Questions: Simplify cos(u-π) to a single trig function using the sum or difference of angles identity.

Simplify cos(u-π) to a single trig function using the sum or difference of angles identity.
Transcript text: Simplify $\cos (u-\pi)$ to a single trig function using the sum or difference of angles identity.
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Solution

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Solution Steps

Step 1: Identify the Trigonometric Function and Angles

The given trigonometric function is cos and the angles are u and pi with an operation '-'.

Step 2: Apply the Sum or Difference Identity

Using the sum or difference identity, the expression simplifies to: cos(u)cos(pi) + sin(u)sin(pi)

Step 3: Simplify the Result

Since we're focusing on the algebraic simplification, the final simplified expression is as shown in Step 2.

Final Answer:

cos(u)cos(pi) + sin(u)sin(pi)

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