to find the distance AB across a river, a distance BC= 309m is laid off on one side of the river. It is found that B= 105.4 degrees and C= 12.2 degrees. Find AB

To find the distance AB across a river, a distance BC= 309m is laid off on one side of the river. It is found that /_B= 105.4 degrees and /_C = 12.2 degrees. Find AB

If angle B is 105.4º, distance AB is not normal to the banks of the river, assuming the banks are parallel.

With the given information, distance AB may be found using the Law oof Sines. WIth /_A being 180 - 105.4 - 12.2 = 62.4º, AB/sin(12.2) = 308/sin(62.4).

Solve for AB.

  1. 👍 0
  2. 👎 0
  3. 👁 577
asked by devin

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math (trigonometry)

    Hi, I need help with these problems, I'm not sure where to start. The book's examples are different. Thanks in advance!! 1.) To find the distance AB across a river, a distance BC of 472m is laid off on one side of the river. It is

    asked by Emma on November 23, 2014
  2. math 2 trigonometry

    solve for oblique triangle given of two side,,, it is desired to find the distance betwen two points A and B lying on opposite banks of river A line segment AC of lenght laid off and the measure of angle B A C and A C B

    asked by amadorlinas on September 27, 2012
  3. Trigonometry

    4. An observer is near a river and wants to calculate the distance across the river. He measures the angle between his observations of two points on the shore, one on his side and one on the other side, to be 28º. The distance

    asked by Gab on May 1, 2015
  4. lwtech

    In order to build a bridge across a river, a surveyor is hired to find the distance across the river. The surveyor places a stake on either side of the river. As shown in the diagram below (the diagram is not drawn to scale). He

    asked by Anonymous on June 25, 2014
  5. math

    the Nile River is the longest river in the world that 4160 miles a group of explorers travel along the entire now in xx days they traveled the same distance each day write an algebraic expression to find out each day's distance

    asked by karla on October 1, 2015
  6. physics

    The current of a river is 1.9 m/s. A person can swim 0.7 m/s. What is the best angle for the swimmer so that it is swept downstream the shortest distance possible? Distance of river is 120 m.

    asked by matthew on February 22, 2010
  7. trigonometry

    A surveyor wishes to calculate the distance between the two trees B and C across a river from where he is standing. If the distance from his position, A to B is 70 meters, the distance from C to A is 100 m,and the angle of A is

    asked by ymme on March 3, 2016
  8. Math

    Find the distance, d across the river. Assume the ratio of d to 75 ft is the same as the ratio of 40 ft to 20 ft. The distance across the river is _____ feet. is it 37.50?

    asked by Jazmyne on January 5, 2012
  9. Classical mechanics

    A boat leaves point P on one side of a river bank and travels with constant velocity V in a direction towars point Q on the other side of the river directly oposite P and distance D from it If r is the instantaneous distance from

    asked by JuanPro on February 7, 2014
  10. Math

    While going downstream boat covers a distance in 48km in 6hrs while returning covering the same distance in a task. find the speed of boat and that of river.

    asked by Yash on April 10, 2018

More Similar Questions