Chapter 4: Problem 32
Use a calculator to evaluate each function. Round your answers to four decimal places. (Be sure the calculator is in the correct mode.) (a) \(\tan 23.5^{\circ}\) (b) \(\cot 66.5^{\circ}\)
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Chapter 4: Problem 32
Use a calculator to evaluate each function. Round your answers to four decimal places. (Be sure the calculator is in the correct mode.) (a) \(\tan 23.5^{\circ}\) (b) \(\cot 66.5^{\circ}\)
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A buoy oscillates in simple harmonic motion as waves go past. The buoy moves a total of 3.5 feet from its low point to its high point (see figure), and it returns to its high point every 10 seconds. Write an equation that describes the motion of the buoy where the high point corresponds to the time \(t=0\) (figure cannot copy)
A car's rear windshield wiper rotates \(125^{\circ} .\) The total length of the wiper mechanism is 25 inches and wipes the windshield over a distance of 14 inches. Find the area covered by the wiper.
Angular and Linear Speeds A DVD is approximately 12 centimeters in diameter. The drive motor of the DVD player rotates between 200 and 500 revolutions per minute, depending on what track is being read. (a) Find an interval for the angular speed of the DVD as it rotates. (b) Find an interval for the linear speed of a point on the outermost track as the DVD rotates.
Fill in the blanks. The angle measure that is equivalent to a rotation of \(\frac{1}{360}\) of a complete revolution about an angle's vertex is one ______.
A privately owned yacht leaves a dock in Myrtle Beach, South Carolina, and heads toward Freeport in the Bahamas at a bearing of \(S 1.4^{\circ} \mathrm{E}\) The yacht averages a speed of 20 knots over the 428 -nautical-mile trip. (a) How long will it take the yacht to make the trip? (b) How far east and south is the yacht after 12 hours? (c) A plane leaves Myrtle Beach to fly to Freeport. What bearing should be taken?
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