Write a Formula for by Writing  as

question 142

Multiple Choice

Write a formula for by writing  as and using the formula for the cosine of a sum. ​

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Definitions:

Average Run Length

In statistical process control, the expected number of samples that will be taken before an action signal is generated.

Control Limits

Predetermined boundaries in statistical process control that indicate if a process is in a state of control or out of control.

Chance Variation

Variations in observations or data that result from random effects or events that cannot be controlled or predicted.

Sample Mean

The average value of a sample set of numbers, calculated by adding all the values and dividing by the number of values.