The transformed equation of x2 + 6xy + 8y2 = 10 when the axes are rotated through an angle is :
15x2 - 14xy + 3y2 = 20
15x2 + 14xy - 3y2 = 20
15x2 + 14xy + 3y2 = 20
15x2 - 14xy - 3y2 = 20
In ABC, with usual notation, observe the two statements given below :
Both I and II are true
I is true, II is false
I is false, II is true
Both I and II are false
If A = 35°, B = 15° and C = 40°, then tan(A) · tan(B) + tan(B) . tan(C) + tan(C) . tan(A) is equal to
0
1
2
3