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Find the angle between the line whose sl...

Find the angle between the line whose slope are 2 and -1 .

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The correct Answer is:
`71^(@)34', (b) 26^(@)34'`
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ICSE-THE STRAIGHT LINE -EXERCISE 16 (a)
  1. Using slopes determine which of the following sets of three points are...

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  2. Find y if the slope of the line joining (-8, 11), (2, y) is -4/(3).

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  3. Find the angle between the line whose slope are 2 and -1 .

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  4. Find the slope of the line which makes an angle of 45^(@) with a line ...

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  5. Find the interior angle of the triangle whose vertics are A(4, 3), B(-...

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  6. Find the slope of a line parallel to a line whose slope is (i) -3 ...

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  7. Find the slope of a line parallel to the which passes through each pai...

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  8. Find the slope of a line parallel to the which passes through the foll...

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  9. Find the slope of a line parallel to the which passes through the foll...

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  10. Find the slope of a line parallel to the line which passes through th...

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  11. Find the slope of a line perpendicular to the line whose slope is 1...

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  12. Find the slope of a line perpendicular to the line whose slope is ...

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  13. Find the slope of a line perpendicular to the line whose slope is 5.

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  14. Find the slope of a line perpendicular to the line whose slope is -5...

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  15. Find the slope of a line perpendicular to the line whose slope is 0

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  16. Find the slope of a line perpendicular to the line whose slope is I...

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  17. Find the slope of a line perpendicular to the line which passes throug...

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  18. Find the slope of a line perpendicular to the line which passes throug...

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  19. Find the slope of a line perpendicular to the line which passes throug...

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  20. Find the slope of a line perpendicular to the line which passes throug...

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