Report - Maths Assignment – 2016-2017 - CBSE Todaycbsetoday.com/wp-content/uploads/2017/01/Maths-11.pdf2 Q.22 Prove that : 0 13 5 cos 13 3 cos 13 9 cos 13 2cos Q.23 Prove that : 16 1 cos20

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