Direction: Solve the following problems.• The length of a radlus of a circle is 9 cm. The arc of a sector measure 60°. Find the area of asector.• The length of a radius of a circle is 7 cm. Find the area of the sector if the measure of the arc ofthe sector is 450.•The length of a radius of a circle is 8 cm. The measure of the arc of a sector is 40. Find the areaof a sector.

Answered: Image /qna-images/answer/585fb0b2-b4c2-45ad-9f87-b55229a6d396.jpg

Answered: Direction: Solve the following…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A radio station tower was built in two sections. From a point 87 feet from the base of the tower, the angle of elevation to the top of the lower section is 31°, and the angle of elevation to the top of the upper section is 42°. Round your answers to the nearest foot. How tall is the tower? feet. How tall is the lower section of the tower? How tall is the upper section of the tower? Submit Question feet. feet.
2. Michael stands 16 metres from the base of a building. He measures the angle of elevation to the top of the building to be 85°. Determine the height of the building, to the nearest tenth of a metre. Include a labeled drawing with your calculations.
The blade of a windshield wiper sweeps out an angle of 135° in one cycle. The base of theblade is 12 inches from the pivot point and the tip is 32 inches from the pivot point. Whatarea does the wiper cover in one cycle? (Round to the nearest 0.1 square inch.)
2 particles travel along curves r, (t) = (t, sin(mt), 1 - cos(It)) and r,(t) = (t - 1, t2 - 3t + 2, 2/(t-1)) They (choose one): (1) collide once. (2) collide twice. (3) do not collide but intersect once. (4) do not collide but intersect twice.
1. A business owner wants to put a security light on the outside of his building. He wants the light to cover the whole width of the sidewalk next to his building. If the sidewalk is 6 feet wide and the light shines down at a 35° angle, how high should he mount the light on the wall? Round to one decimal. Height 35° Sidewalk 6 feet
1. You are standing 200 feet away from the Eiffel Tower (the actual one, not the one in Las Vegas), look up at it in awe. The angle of elevation from where you are, to the top, is 79.54°. How tall is the Eiffel Tower?
5. An arc 18.0 cm long on the circumference of a circle subtends an angle of 120°. What is the radius of the circle? A. 0.15 cm B. 37.6 cm O C. 6.67 cm D. 8.60 cm

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