Friday

April 25, 2014

April 25, 2014

Posted by **Ansley** on Sunday, December 19, 2010 at 7:46pm.

- trig -
**bobpursley**, Sunday, December 19, 2010 at 8:04pmYou have ASA. Solve the triangle. (getting the two other sides, law of sines).

Now, area of the triangle= sqrt(s(s-a)(s-b)(s-c)) where s is the half-perimeter (this is known as Heron of Alexandria's formula).

Now set it equal to 1/2 Base*height,or

area= 1/2 (150)width river

setting the two areas equal, you can find the width of the river

**Related Questions**

Pre Calc - From 2 points 400 yards apart on the bank of a straight river flowing...

physics - A 410-m-wide river has a uniform flow speed of 2.0 m/s through a ...

Physics - A 400.0-m-wide river flows from west to east at 30.0 m/min. Your boat ...

physics - A 400.0-m-wide river flows from west to east at 30.0 m/min. Your boat ...

Classical mechanics - A boat leaves point P on one side of a river bank and ...

Math - I'm doing Similarities in class and have no idea how this question works...

Physics - A surveyor measures the distance across a straight river by the ...

Vectors - a river is 2 km wide and flows at 4km/h. a motorboat has a speed of 10...

math - A cliff on the bank of a river is 300m high if angle of deprssion of a ...

Geometry - The distance between two docks on opposite sides of a river is 90 ...