If acute angle between lines ax^(2)+2hxy...

If acute angle between lines `ax^(2)+2hxy+by^(2)=0` is congruent to that
between lines `2x^(2)-5xy+3y^(2)=0` and `k(h^(2)-ab)=(a+b)^(2)` then `k=`

A

(a) `-(10)^(2)`

B

(b) `(-10)^(2)`

C

(c) `-10`

D

(d) `10`

Verified by Experts

The correct Answer is:

B

NA

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