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(b) Simplify cos0 1+sin 0 + cos0 1-sin 0 [5 Marks] (c) An AP has the 2nd term 5 and 5th term 9. Find

 

(b) Simplify cos0 1+sin 0 + cos0 1-sin 0 [5 Marks] (c) An AP has the 2nd term 5 and 5th term 9. Find the first term and common difference. (d) Prove analytically that (AnB)n C = An (BnC) [5 Marks] [6 Marks]

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