document.write( "Question 1016356: An east bound car is observed 2 miles north of an outpost 10 minutes later its bearing is 80° 45' east. Find the speed of the car in mph \n" ); document.write( "
Algebra.Com's Answer #632751 by ankor@dixie-net.com(22740) You can put this solution on YOUR website! An east bound car is observed 2 miles north of an outpost 10 minutes later its bearing is 80° 45' east. \n" ); document.write( " Find the speed of the car in mph \n" ); document.write( ": \n" ); document.write( "Change 80 degrees 45 min to 80.75 degrees \n" ); document.write( "This can be solved as a right triangle. \n" ); document.write( " The car travels at a right angle from a 2 mi line from the observer. \n" ); document.write( " The distance (d) traveled by the car is the side opposite 80.75 degrees \n" ); document.write( "Tan(80.75) = \n" ); document.write( "d = 6.14023 * 2 \n" ); document.write( "d = 12.28 mi, it traveled in 10 min \n" ); document.write( ": \n" ); document.write( "10 min is 1/6 of an hr. Speed = dist/time \n" ); document.write( "S = \n" ); document.write( "S = 12.28 * 6 \n" ); document.write( "S = 73.68 mph \n" ); document.write( " |