Abiologist wants to know the width (w) of a river to properly set instruments for an experiment. from point a, the biologist walks downstream 100 feet and sights to point c. from the sighting it is determined that 0=54°. how wide is the river?

w = 137.6 ft

Step-by-step explanation:

100 tan 54° = w/100 *100

Simplify w/100*100 = w

w = 100 tan 54°

w = 137.6 ft

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point