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Consider the equation of a pair of strai...

Consider the equation of a pair of straight lines as `x^2-3xy+lambday^2+3x-5y+2=0`
The angle between the lines is `theta` then the value of cos `2 theta` is

A

`1/3`

B

`2/3`

C

`3/5`

D

`4/5`

Text Solution

Verified by Experts

The correct Answer is:
D
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