- #1
#matt#
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I have a question on an assignment that expects the I+J form of a vector but is only giving the direction(cardinal) or angle of the vector. See example below:
Unit vectors and are directed east and north, respectively. Calculate the unit vector (in terms of I and J) in the following directions.
(a) northeast
(b) 47° clockwise from the -y axis
(c) southwest
All answers demand an I + J response and I'm can't exactly figure out what it wants or where to even start without a scalar.
Finding the I+J components with an angle of direction can be determined by using trigonometric functions to solve for components of the resulting reference right triangle.
For the (a) problem, I tried putting in s for scale and tried a few different pseudo type answers but was not successful. e.g. rcos(45)i + rsin(45)j
Has anyone seen problems like this particular one or have any ideas on what it's asking for?
Homework Statement
Unit vectors and are directed east and north, respectively. Calculate the unit vector (in terms of I and J) in the following directions.
(a) northeast
(b) 47° clockwise from the -y axis
(c) southwest
All answers demand an I + J response and I'm can't exactly figure out what it wants or where to even start without a scalar.
Homework Equations
Finding the I+J components with an angle of direction can be determined by using trigonometric functions to solve for components of the resulting reference right triangle.
The Attempt at a Solution
For the (a) problem, I tried putting in s for scale and tried a few different pseudo type answers but was not successful. e.g. rcos(45)i + rsin(45)j
Has anyone seen problems like this particular one or have any ideas on what it's asking for?