Q.
If a+b=2h , then the area of the triangle formed by the lines ax2+2hxy+by2=0 and the line x-y+2=0 in square units is
see full answer
Want to Fund your own JEE / NEET / Foundation preparation ??
Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*
An Intiative by Sri Chaitanya
a
a-ba+b
b
a+ba-b
c
a2+b2a-b
d
a2+b2a+b
answer is A.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
The area of the triangle formed by the lines ax2+2hxy+by2=0 and lx+my+n=0 is n2h2-abam2-2hlm+bl2Here a=a,2h=2h,b=b,l=1,m=-1,n=2Substitute the appropriate values in the above formula and then use the condition a+b=2h Hence, the required area is 4h2-aba+2h+b=4a+b24-aba+b+a+b=a-ba+b
Watch 3-min video & get full concept clarity