Question

Two friends are on opposite sides of a river. To find the width of the river, each of them hammered a stake on his bank of the river in such a way that the distance between the two stakes approximates the width of the river. One of the friends walks 100 feet away from his stake along the river and finds that the line of sight from his new position to his friend's stake across the river and the line of sight to his own stake form a 25 degree angle. How wide is the river?

Name: two friends are on opposite sides of a river to find the width of the river each of them hammered a stake on his bank of the river in such a way that the distance between the two stakes appr 69287
Uploaded: 2021-11-08T09:20:47-08:00
Duration: 1 min 33 s
Channel: Sima Sarker
Description: two friends are on opposite sides of a river to find the width of the river each of them hammered a stake on his bank of the river in such a way that the distance between the two stakes appr 69287

          Two friends are on opposite sides of a river. To find the width
of the river, each of them hammered a stake on his bank of the
river in such a way that the distance between the two stakes
approximates the width of the river. One of the friends walks 100
feet away from his stake along the river and finds that the line of
sight from his new position to his friend's stake across the river
and the line of sight to his own stake form a 25 degree angle. How
wide is the river?

Added by Sean L.

Precalculus with Limits

Ron Larson 2nd Edition

Instant Answer

Solved by Expert Sima Sarker

11/08/2021

Step 1

Label the distance walked by one friend as 100 ft, the angle between the two lines of sight as 25 degrees, and the width of the river as D. Show more…

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Two friends are on opposite sides of a river. To find the width of the river, each of them hammered a stake on his bank of the river in such a way that the distance between the two stakes approximates the width of the river. One of the friends walks 100 feet away from his stake along the river and finds that the line of sight from his new position to his friend's stake across the river and the line of sight to his own stake form a 25 degree angle. How wide is the river?