Activities 755
Using Vectors to Determine Velocity
A small fishing boat leaves from the south bank of the Allegheny River and heads at a
80° angle with an engine speed of 20 knots. However, the eastward force of the current
carries the boat along so it actually travels at a 60° angle with the shore.
How fast is the current, and how fast does the boat actually travel?
1. Set the modes for
Page 1 as shown in this
screen. (Show angles in degrees instead
of radians and display all digits with a
floating decimal point.)
Press: 3 D D D. On the Angle option,
select
2:DEGREE. On the Display Digits
option, select
E:FLOAT.
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