Three locations are marked next to a river. points b and c are on the same side of the river, and point a is on the other side of the river. to find the distance ab across a river, a distance bc of 241 meters is laid off on one side of the river. it is found that the angle at point b is 108.6° and the angle at point c is 14.9°. find the distance ab (across the river). round to the nearest meter.

74.31353

=74 m

Step-by-step explanation:

given that three  locations are marked next to a river. Points B and C are on the same side of the river, and point A is on the other side of the river. To find the distance AB across a river, a distance BC of 241 meters is laid off on one side of the river. It is found that the angle at point B is 108.6° and the angle at point C is 14.9°.

we have information about triangle ABC as side BC =241, Angle B = 108.6 and angle C = 14.9 degrees.

Hence this is an obtuse scalene triangle.

Angle ∠A = 56.5° (III angle)

Using sine formula we get

So distance AB is 74 metres.

lo.lll

step-by-step explanation:

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