Ship A is traveling due west toward Lighthouse Rock at a speed of 15 kilometers per hour (km/hr). Ship B is traveling Ship B due north away from Lighthouse Rock at a speed of 10 km/hr. Let x be the distance between Ship A and Lighthouse Rock at time t, and let y be the distance between Ship B and Ship A Lighthouse Rock at time t, as shown in the figure above. Lighthouse Rock (a) Find the distance, in kilometers, between Ship A and Ship B when = 4 km and y = 3 km. (b) Find the rate of change, in km/hr, of the distance between the two ships when a= 4 km and y = 3 km. (c) Let 0 be the angle shown in the figure. Find the rate of change of 0, in radians per hour, when a = 4 km and y = 3 km.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 92E
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Ship A is traveling due west toward Lighthouse Rock at a
speed of 15 kilometers per hour (km/hr). Ship B is traveling
Ship B
due north away from Lighthouse Rock at a speed of 10
km/hr. Let x be the distance between Ship A and Lighthouse
Rock at time t, and let y be the distance between Ship B and
Ship A
Lighthouse Rock at time t, as shown in the figure above.
Lighthouse
Rock
(a) Find the distance, in kilometers, between Ship A and
Ship B when = 4 km and y = 3 km.
(b) Find the rate of change, in km/hr, of the distance between the two ships when a= 4 km
and y = 3 km.
(c) Let 0 be the angle shown in the figure. Find the rate of change of 0, in radians per hour,
when a = 4 km and y = 3 km.
Transcribed Image Text:Ship A is traveling due west toward Lighthouse Rock at a speed of 15 kilometers per hour (km/hr). Ship B is traveling Ship B due north away from Lighthouse Rock at a speed of 10 km/hr. Let x be the distance between Ship A and Lighthouse Rock at time t, and let y be the distance between Ship B and Ship A Lighthouse Rock at time t, as shown in the figure above. Lighthouse Rock (a) Find the distance, in kilometers, between Ship A and Ship B when = 4 km and y = 3 km. (b) Find the rate of change, in km/hr, of the distance between the two ships when a= 4 km and y = 3 km. (c) Let 0 be the angle shown in the figure. Find the rate of change of 0, in radians per hour, when a = 4 km and y = 3 km.
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