Question: (a) Starting from cos1 and integration over the range [0,x] establish that x sinxx. By integrating this inequality again show that cos.x 1-- By

(a) Starting from cos1 and integration over the range [0,x] establish that

(a) Starting from cos1 and integration over the range [0,x] establish that x sinxx. By integrating this inequality again show that cos.x 1-- By 2 (b) Use these results and the integrating once more establish that sinx> x== x 6 sin x squeeze theorem to prove that lim- =1. x0 X

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