if the curves y2=6x, 9x2+by2=16 intersect each other at right angles, then the value of b is :
Answer (1)
10th Jun, 2018
Hey Snhl,
- You can use this formula :> tanA=(+-) (m2-m1)/(1+m1*m2). Since curves intersect at right angle so A=90 degree.
- So tanA=infinity. Then 1+m1*m2=0 this is equation 1
- solve the given two equation and eliminate either x or y.
Solve the above equations, you will get your answer.
Good Luck!
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