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Find distance PQ between the points P ( ...

Find distance PQ between the points `P ( a cos alpha, a sin alpha) and Q ( a cos beta, a sin beta)`.

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The correct Answer is:
`2a sin ((alpha - beta)/(2)) unit`
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KUMAR PRAKASHAN-STRAIGHT LINES-Practice Work
  1. A(6, 3), B(-3, 5), C(4, -2) and D(x, 3x) are given points. Find x if (...

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  2. Find point on Y -axis which is at the equidistance from the given poin...

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  3. Find distance PQ between the points P ( a cos alpha, a sin alpha) and ...

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  4. Find x if the slope of the line passes from points A(x, 2) and B(6, -8...

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  5. Without using Pythagoras theorem prove that A(12, 8), B(-2, 6) and C(6...

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  6. Using definition of slope prove that P(4, 8), Q(5, 12) and R(9, 28) ar...

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  7. Find slope of the perpendicular line to the line passes from points (0...

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  8. Find y if the line passes from points (3,y) and (2,7) is parallel to t...

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  9. Prove that line passes from the points A( 4, -6) and B(-2, -5) makes o...

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  10. A(-2, 1), B(2, 3) and C(-2, -4) are verticies of Delta ABC. Find measu...

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  11. Angle between two lines is 45° and slope of one line is 2 then find sl...

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  12. A(0,2), B(-2,-1), C(4,0) and D(2,3) are vertices of parallelogram ABCD...

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  13. Two lines passes through (0,0), (2,3) and (2,-2), (3,5). Find measure ...

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  14. Obtain the equation of the line which satisfying given condition : (...

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  15. Obtain the equation at the line in Ex. (1) to (10) satisfying given co...

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  16. Obtain the equation at the line in Ex. (1) to (10) satisfying given co...

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  17. Obtain the equation at the line in Ex. (1) to (10) satisfying given co...

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  18. Obtain the equation at the line in Ex. (1) to (10) satisfying given co...

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  19. Obtain the equation at the line in Ex. (1) to (10) satisfying given co...

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  20. Obtain the equation at the line in Ex. (1) to (10) satisfying given co...

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