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Chapter 8: Q. 7 (page 540)
Find the area of each triangle. Round answers to two decimal places
The area of the triangle is 2.99 sq. units
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Find the distance from A to C across the gorge illustrated in the figure.
Find the distance from A to C across the pond illustrated in the figure.
Finding the Height of an Airplane An aircraft is spotted by two observers who are 1000 feet apart. As the airplane passes over the line joining them, each observer takes a
sighting of the angle of elevation to the plane, as indicated in the figure. How high is the airplane?
The displacement d (in meters) of an object at time t (in seconds) is given
(a) Describe the motion of the object.
(b) What is the maximum displacement from its resting position?
(c) What is the time required for one oscillation?
(d) What is the frequency?
Find an equation for the circle with center at the point and radius 3. Graph this circle.
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