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The angle between the lines x cos alpha ...

The angle between the lines `x cos alpha + y sinalpha=a` and `xsinbeta- ycosbeta = a` is

A

1) `beta - alpha`

B

2) `pi + beta- alpha`

C

3) `pi/2 + beta + alpha`

D

4) `pi/2 - beta + alpha`

Text Solution

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The correct Answer is:
D
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    A
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    B
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    C
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    D
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