For the parabola y2+6y−2x+5=0 (i) The vertex is (−2,−3) (ii) The directrix is y+3=0 which of the following is correct?
Both I and II are true
I is true, II is false
I is false, II is true
Both I and II are false
(y+3)2=2(x+2)Vertex=(h,k)=(−2,−3)4a=2⇒a=12Directrix : x=h−a⇒2x+5=0
Observe the following statements
(i)In ΔABC,bcos2C2+c cos2B2=s
(ii)In ΔABC,cotA2=b+ca⇒B=900
Which of the following is correct?