Which trig ratio must be the same as cos(Q) in the triangle provided? R

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How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0