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The cosine function is an even function.(a) True(b) FalseI had been asked this question in a job interview.The query is from Dynamic Braking of DC Shunt Motors topic in division Braking of DC Motors & Induction Motors of Electric Drives

Answer»

The correct option is (a) True

The EXPLANATION: The EVEN functions are those functions which are a mirror image of the y-axis. The cosine function is an even function WHOSE time period is 2π.



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