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Chapter 7: Q. 64 (page 504)

In Problems 64-75, solve each equation on the interval 0鈮�胃<2蟺.

cos胃=12.

Short Answer

Expert verified

The solution set for the equationcos胃=12is,胃鈭�蟺3,5蟺3.

Step by step solution

01

Step 1 Given equation is,

cos胃=12

The given equation is in the interval 0鈮�胃<2蟺.

In the interval[0,2蟺)there are two angles for which the equationcos胃=12satisfies.

02

Step 2 The angles which satisfies the given equation are,

胃=蟺3胃=5蟺3

Hence the solution set is,胃鈭�蟺3,5蟺3.

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