39Find the new slope....
tan(30 - 15) = tan15°.
The point is given. As the line is rotated about the point, the point does not change.
So use the one point form.
A line through the point A (2, 0) which makes an angle of 30º with the positive direction of x-axis is rotated about A in clockwise
direction through an angle 15º. Then the equation of the straight line in the new position is
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UP 0 DOWN 0 0 5
5 Answers
3939Err manmay...the line is rotated about (2,0)...iska matlab (2,0) has not moved, only the line has....
Imagine it like this. The line passes through (2,0) and you tilt it to the right by 15 degrees. It is still passing through (2,0) nevertheless.
39lola...this is becoming like Yahoo Answers in that case :P
Well..I left him to find the equation on his own.
