Math 123 – Problem Set #4 For questions 1 – 8 find the exact value of each expression. 1. 13cos262. 13cos2563. 1222sin sin24. 11sinsin2125. 121sis2n co336. 1tan sec2567. 13sincos448. 15cot cos5129. Explain why51sin62, but115sin26. Because the sine function is not one-to-one we must restrict the domain of the function. The restriction we have chosen to use is ,22. This becomes the range of the inverse sine function and 56is not in this range.For questions 10 – 13 approximate each expression in radians, with your calculator, accurate to
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