In the following EX:3.3 6th Sum cos[Pi/4-x + Pi/4-y] become cos[Pi/2-(x+y] My doubt is how Pi/4 becamePi/2 ???????????????

Asked by R.K. Kumar | 17th Sep, 2012, 09:00: PM

Expert Answer:

Answered by  | 17th Sep, 2012, 10:00: PM

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