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What is the angle between the lines x co...

What is the angle between the lines x cos `alpha + y sin alpha = a` and `x sin beta - y cos beta = a` ?

A

`beta - alpha`

B

`pi + beta - alpha`

C

`pi/2 + beta+ alpha`

D

`pi/2 - beta + alpha`

Text Solution

Verified by Experts

The correct Answer is:
D
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