Questions
The points of contact of the vertical tangents to
a
(2, 5), (2, 1)
b
(-1 , 3), (5, 3)
c
(2, 5), (5, 3)
d
(-1, 3), (2, 1)
detailed solution
Correct option is B
For vertical tangents dxdθ=0 so, we have −3cosθ=0⇒θ=π2 or 3π2. Corresponding to these values of θ, we have x=2−3sinπ2=−1,y=3+2cosπ2=3x=2−3sin3π2=2+3=5,y=3+2cos3π2=3Thus the required points are (-1, 3) , (5, 3).Talk to our academic expert!
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