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Chapter 4: Problem 23
Convert each angle in radians to degrees. $$\frac{2 \pi}{3}$$
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Use the keys on your calculator or graphing utility for converting an angle in degrees, minutes, and seconds \(\left(D^{\circ} M^{\prime} S^{\prime \prime}\right)\) into decimal form, and vice versa. Convert each angle to \(D^{\circ} M^{\prime} S^{\prime \prime}\) form. Round your answer to the nearest second. $$50.42^{\circ}$$
Determine the amplitude, period, and phase shift of each function. Then graph one period of the function. $$y=2 \cos (2 \pi x+8 \pi)$$
Write the point-slope form and the slope-intercept form of the line passing through (-1,-2) and \((-3,4) .\) (Section 1.4 Example 3 )
Repeat Exercise 109 for data of your choice. The data can involve the average monthly temperatures for the region where you live or any data whose scatter plot takes the form of a sinusoidal function.
What is the amplitude of the sine function? What does this tell you about the graph?
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