Find the value of x in each case. give reasons to justify your solutions!

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News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

What percent of the circle below is shaded?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle